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Diving Northern gannets (Morus bassanus) taking Mackerel (Scomber scombrus) underwater. Blue sea and multiple other diving gannets in the background. Photographed at Noss Head, Shetland, UK.

Credit: David Keep

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Diving Northern gannets

Diving Northern gannets (Morus bassanus) taking Mackerel (Scomber scombrus) underwater. Blue sea and multiple other diving gannets in the background. Photographed at Noss Head, Shetland, UK.

Credit: David Keep

Observing Seabirds Understanding Oceans

Diving Northern gannets (Morus bassanus) taking Mackerel (Scomber scombrus) underwater. Blue sea and multiple other diving gannets in the background. Photographed at Noss Head, Shetland, UK.

Credit: David Keep

Roughly 350 species of seabirds around the world rely on healthy marine ecosystems for food. As these systems change, seabirds can offer an unparalleled glimpse into how our oceans work and how they are changing. This interactive webstory assembles data from research sites around the world to explore how we can better understand oceans by observing seabirds.

“Sentinel species” are species that are observable, easily-studied, and sensitive to changes in the environment. Scientists can observe seabirds at sea or on breeding islands and coastlines. Seabirds are affected by environmental shifts, particularly those that impact the availability of their prey. Thus, seabirds can provide valuable insights into ocean conditions.

Every year, researchers visit seabird breeding colonies to measure breeding success, population size, and diet composition. As observations accumulate over decades, scientists can begin to investigate patterns in the data and understand what seabirds are telling us about how our oceans are changing.

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Arctic Tern and chick

Arctic Tern and chick on the island of Spitsbergen, Svalbard.

Credit: iStock/RelaxedPace

73
Species
87
Sites
198
Time Series
Datasets
6,000+
Breeding Success
Observations

meet the researchers

In 2021, the Farallon Institute in Petaluma, California formed the Global Seabird Working Group (GSWG), with funding from the U.S. National Science Foundation. The GSWG now includes over 130 researchers stationed all over the world — all dedicated to understanding seabirds and preserving healthy marine ecosystems.

William Sydeman, Ph.D.

President and Chief Scientist, Farallon Institute
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Bill Sydeman

Bill's career exceeds three decades of ecological research. Starting as an intern marine ornithologist working on the Farallon Islands in 1981, Bill spent 15 years as the Director of Marine Ecology at PRBO Conservation Science before establishing the Farallon Institute. Bill has conducted a number of "plankton to predator" studies in the California Current large marine ecosystem, and has written about climate effects on seabirds, marine mammals and fish. In recent papers, Bill described dramatic and abrupt ecosystem changes in response to climate variability. Bill serves on many scientific panels, notably as the Chair of the Advisory Panel for Marine Birds and Mammals for the North Pacific Marine Science Organization and Scientific Advisory Committee for implementation of the State of California's Marine Life Protection Act. Bill has presented to state and federal policy-makers on the effects of climate change on marine ecosystems, and how to best design and use the nation's new ocean observing systems.

Kyle Elliott, Ph.D.

Canada Research Chair, McGill University
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Kyle Elliott

Just another fellow who likes auks and remote islands. I spend most of my time drinking peppermint tea in a blind and wondering what kind of seabird I’d be happiest marrying.

Sites: Coats Middleton

Hallvard Strøm

Head of Section/Research Scientist, Norwegian Polar Institute
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Strøm_Hallvard

My research is focusing on seabird population dynamics, movements, and ecotoxicology.

Sites: Bjornoya

Bob Furness, B.Sc., Ph.D., FRSE

Professor, MacArthur Green
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Bob Furness

Bob held a chair of Seabird and Fishing Interactions at the University of Glasgow and subsequently worked for MacArthur Green as Principal Ornithologist. He was a member of the Board of Scottish Natural Heritage (statutory advisor to Scottish Government on conservation policy) for eight years. He has maintained long-term studies of seabird ecology at Shetland, making annual trips to the remote island of Foula every year from 1971 to 2010 (and occasionally since then), supervising over 60 PhD students in that time.

Sites: Foula
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Azwianewi Makhado

Seabirds biologist working on seabirds in both off coast of South Africa, Antarctica and Prince Edward Island. Special interest in foraging, population and demographic parameters and conservation and protection of gtheir habitats.

Megan Cimino, Ph.D.

Associate Researcher, UC Santa Cruz
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Megan Cimino

Megan is a biological oceanographer focused on understanding factors that drive species demographics, distributions and movements. Megan’s work spans multiple trophic levels, scales and ecosystems, and utilize innovative tools and approaches. She leads the seabird research for the Palmer Station Antarctica Long-Term Ecological Research (LTER) program with efforts focused on breeding biology, foraging ecology, behavior and migration to understand mechanistic processes and climate change impacts.

Sites: Palmer

Maggie Lee Post, B.A.

Scientist, Farallon Institute
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Maggie Lee Post

Maggie Lee comes to the Farallon Institute with a cumulative twelve years’ experience in monitoring and researching seabird colonies in Maine, Hawaii, and San Diego, CA. She has a B.A. in physics from Reed College, but a passion for all things seabird. Her previous research has focused on seabird-forage fish interactions and has led her to an ecosystem-based approach to conservation. Maggie Lee joined the Farallon Institute in 2021 to conduct research on the breeding ecology and disturbance of seabirds on Alcatraz Island and to study marine predator diet.

Sites: Alcatraz

Philip Trathan, OBE, D.Sc.

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Philip Trathan

I am a BAS Emeritus Fellow having retired in 2022. I previously led the Conservation Biology group for over 16 years. I participated in 23 Antarctic field trips, having been involved in predator tracking studies for over 20 years. I am especially interested in how seabirds utilize their available habitat and how this relates to their reproductive output and performance, including in the context of climate change and fishing pressure.

Sites: Bird Signy

Tycho Anker-Nilssen, Ph.D.

Senior Research Scientist, Norwegian Institute for Nature Research
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Tycho Anker-Nilssen

Tycho has led the seabird research and monitoring in the Røst archipelago, North Norway since the early 1980s, and been instrumental in establishing and coordinating similar long-term work across 18+ other keysites in Norway and Svalbard. He also headed SEAPOP from the start until 2023 and has represented Norway in a range of international working groups on seabird conservation and research.

Sites: Røst

Sandra Bouwhuis

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Sandra Bouwhuis

I am an evolutionary ecologist with a specific interest in the causes and consequences of within-individual change in life-history traits and between-individual variation in life-history strategies. I mostly conduct analyses on long- term individual-based datasets collected in wild populations, and have so far had the pleasure to work on great tits (Parus major), pre-industrial humans (Homo sapiens), jackdaws (Corvus monedula) and common terns (Sterna hirundo).

Sites: Wilhelmshaven
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Belinda Cannell

University of Western Australia; Murdoch University

Sites: Penguin

Jean-François Rail, M.Sc.

Seabird biologist, Canadian Wildlife Service, Quebec
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Jean-François Rail

Jean-François Rail started to work as seabird biologist for the Canadian Wildlife Service in 1995, just after finishing a master’s degree in biology. He has since documented the status, distribution and population trends of seabirds breeding in the province of Quebec, in Canada. His work also includes studies of seabird breeding success, chick growth, diets, foraging, etc. with emphasis on the Gulf of St. Lawrence ecosystem and the Northern Gannet.

Sites: Bonaventure

Jefferson Hinke, Ph.D.

Research Fishery Biologist, U.S. AMLR Program
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Jefferson HInke

Jefferson Hinke leads seabird research for the U.S. Antarctic Marine Living Resources Program within NOAA Fisheries. He earned Ph.D. in Marine Biology from Scripps Institution of Oceanography at UC – San Diego in 2012. His research focuses on the ecology of Pygoscelis penguins and their interactions with fisheries, changing food webs, climate, and other environmental stressors that affect the marine ecosystem in the Antarctic Peninsula region.

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Elizabeth Bell

Passionate seabird and island restoration ecologist.

Sites: Antipodes

Philippa Agnew, Ph.D.

Science & Environmental Manager, Ōamaru Blue Penguin Colony
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Philippa Agnew

Philippa has worked with little penguins for 20 years and began at the Ōamaru Blue Penguin Colony in 2006. She developed a research programme, using both long-term monitoring data and foraging research to better understand little penguin ecology and potential impacts of climate change on the species. She has continued to drive the science work at the Colony to improve conservation outcomes and provide support to other little penguin researchers in New Zealand.

Sites: Oamaru

Daniel Oro

Professor, CEAB (CSIC)
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Daniel Oro

Professor Daniel Oro is an ecologist at the Center for Advanced Studies of Blanes, Spain (CEAB-CSIC). His research focuses on population dynamics, conservation biology, and ecological resilience, with a particular emphasis on seabird and island ecosystems. He has contributed significantly to understanding human-wildlife interactions and their ecological implications. His work bridges academic research and practical conservation efforts globally.

Sites: Ebro Delta

Enriqueta Velarde, Ph.D.

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Enriqueta Velarde

Ralph Lee Hopkins

Credit: Ralph Lee Hopkins

Works with seabird breeding and feeding ecology and behaviour since 1979 generating long-term data series for purposes of ecosystem conservation and sustainable management. Presently full time researcher and professor at the Institute of Marine Sciences at Universidad Veracruzana, Mexico. Has also worked with Comcaac people (native American group living along the east coast of the Gulf of California) to help record and preserve traditional knowledge about birds and their environment.

Sites: Rasa

Scott Hatch, Ph.D.

President & Senior Scientist, Institute for Seabird Research and Conservation
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Scott Hatch

I retired in 2012 after 37 years as a Research Wildlife Biologist with the U.S. Geological Survey and U.S. Fish and Wildlife Service in Alaska, over which time I conducted studies of seabird reproduction and feeding ecology at numerous colony sites around the coast of Alaska. Since retirement I continue to work under the auspices of the Institute for Seabird Research and Conservation, a nonprofit founded principally for the purpose of developing a field station and continuing long-term seabird research and monitoring on Middleton Island in the Gulf of Alaska.

Sites: Middleton

Christophe Barbraud, Ph.D.

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Christophe Barbraud

After a PhD on seabirds at the Centre d'Etudes Biologiques de Chizé and a post-doctorate at Tour du Valat, I joined CNRS in 2001. I am studying the ecology, demography, population dynamics and impact of global change on seabirds, and regularly carry out fieldwork in the Southern Ocean, Antarctica and France.

Erpur Snær Hansen, Ph.D.

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Erpur Snær Hansen

I am a project leader of Atlantic Puffin population monitoring program in 12 colonies around Iceland since 2010, and project leader of the Icelandic nocturnal seabird monitoring program since 2017.

Lindsay Young, Ph.D.

Vice President of Research, National Geographic Society
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Lindsay Young

Lindsay is a seabird ecologist who has specialized in the conservation of albatrosses over the last twenty years. She has worked on assisted migration and breeding colony restoration across Hawaii and the Pacific. She now oversees the research program for Pristine Seas at the National Geographic Society whose goal is to help countries across the Pacific create marine protected areas.

Sites: Kaena

Nina Dehnhard, Ph.D.

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Nina Dehnhard

I am an ecologist with a broad background in zoology and marine biology, with a special interest in seabirds. My focus is in the field of conservation biology, and I am particularly interested in the effects of environmental changes on the foraging ecology, population dynamics, physiology and phenology of seabirds. I have worked with both tropical and cold-temperate species, particularly focussing on southern rockhopper penguins, Antarctic fulmarine petrels and northern fulmars. Since 2019, I am part of the Norwegian Seabird Population Monitoring Programme SEAPOP (www.seapop.no/en) and work at the SEAPOP-keysite Sklinna. Here, the main focus is on European shags, but I also work with Atlantic puffins,  common and black guillemots, razorbills, herring and great-black-backed gulls.

Sites: Sklinna

Heather Major, Ph.D.

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Heather Major

Heather is a professor of marine biology at the University of New Brunswick (Saint John). Her research interests include seabird responses to ocean warming, patterns of movement, population dynamics, and response to introduced predators. Heather has led the monitoring and research at Machias Seal Island since 2016.

Sites: Machias Seal

James A. Mills, Ph.D.

Assistant Director, Endangered Species Research (Retired), New Zealand Wildlife Research
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James A. Mills

Credit: Deborah Mills

Scientist responsible for long term research on seabirds and endangered New Zealand birds. Focused research on the endangered Takahe, a flightless rail, and the Red-billed gull on the Kaikoura Peninsula. The Red-billed gull study followed over 5,000 individually colour-marked birds over their lifespan to quantify age lived, frequency of breeding, number of partners, number of chicks fledged, pair-bond duration, and causes of mate change.

Sites: Kaikoura

Tone K. Reiertsen, Ph.D.

Researcher, Norwegian Institute for Nature Research
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Tone K. Reiertsen

I am a seabird ecologist with a special interest in how environmental changes and human activities impact seabirds' demography and population dynamics, phenology, behaviour and evolution. At the moment I focus mainly on how species adapt to a changing world and on finding solutions to enhance their conservation status. I am part of the SEAPOP group in Norway, and am responsible for the monitoring on the Hornøya keysite. I work with several species, including common and brünnich guillemot, atlantic puffin, razorbill, black-legged kittiwake, European shag, herring gull and greater black-back gull.

Sites: Hornoya

Jonas Hentati-Sundberg, Ph.D.

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Jonas Hentati-Sundberg

Seabird ecologist interested in new methods for studying seabirds in the field, including sailing drones, automated sensor system and Artificial Intelligence.

Sites: Stora Karlsö

Christopher A Surman, Ph.D.

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Christopher A Surman

Chris has been studying the ecology of seabird communities across the Eastern Indian Ocean region for the past 33 years.  Based at the Houtman Abrolhos, an archipelago of 195 islands in Western Australia.  He is currently researching oceanographic impacts on breeding, community ecology, GLS/GPS tracking, demography and impacts of marine debris in nests of terns, noddies and shearwaters.

Thierry Boulinier, Ph.D., DVM

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Thierry Boulinier

Credit: © A. Gamble

Thierry has been interested in seabirds for a while. After a first visit to the Shetland Islands in 1983, at the age of 15, he came back few times, notably to watch puffins and great skuas interacting on Hermaness. He went on to veterinary studies at Alfort National Vet School near Paris, and then into a Master and PhD in ecology on host-tick interactions and breeding habitat selection in kittiwakes on the Cap Sizun colonies, Brittany. In 1998, with support from the French Polar Institute (IPEV), he set up with collaborators what eventually became a >20 year study on kittiwakes on Hornoya, northern-Norway. Since 2015, he is the principal investigator of ECOPATH, a French Polar Institute (IPEV) project on the ecology of infectious disease in seabirds in Terres Australes et Antarctiques Françaises (Crozet, Kerguelen and Amsterdam islands). He recognized early that seabirds and their parasites and pathogens represent fascinating systems to address basic and applied ecology questions, from spatial population ecology to comparative immunology and conservation. 

P. Dee Boersma, Ph.D.

Wadsworth Endowed Chair in Conservation Science, Center for Ecosystem Sentinels, Department of Biology, University of Washington
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P. Dee Boersma

Credit: William Conway

Dr. Boersma is the Director of the Center for Ecosystem Sentinels at the University of Washington in the Department of Biology and holds the Wadsworth Endowed Chair in Conservation Science. In the 1970’s she started working with Galápagos penguins to determine how many there were, and now is trying to expand their population by providing high quality nests. Fork-tailed storm-petrels in Alaska kept her busy for a decade, and her Magellanic penguins studies in Argentina continued for over 40 years.

Sites: Punta Tombo

Jaime Jahncke, Ph.D.

Director, California Current Group, Point Blue Conservation Science
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Jaime Jahncke

Credit: Jaime Jahncke

Dr. Jaime Jahncke is the Director of the California Current Group at Point Blue Conservation Science and an Adjunct Professor at San Francisco State University’s Estuary & Ocean Science Center. With a PhD in Biological Sciences from UC Irvine, he brings over 30 years of experience in marine science, focusing on ocean conservation, sustainable fisheries, and protecting wildlife. Jaime leads a dedicated team, working with partners from government agencies, academia, and nonprofits. His work has taken him from Peru to Antarctica, Alaska, and California, all aimed at finding solutions to protect our oceans and the life they support.

Sites: SE Farallon

Rob Barrett

Professor Emeritus, Tromsø University Museum
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Rob Barrett
Sites: Hornoya

Tim Birkhead, DPhil FRS

University of Sheffield
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Tim Birkhead

Tim Birkhead FRS is emeritus professor of behaviour and evolution at the University of Sheffield. His research on promiscuity and sperm competition in birds re-shaped our understanding of bird mating systems. In addition, he has maintained a long-term study of common guillemots on Skomer Island, Wales since 1972. Since 2014 this study has been funded entirely through public donations

Sites: Skomer

Tony Diamond, M.Sc., Ph.D.

Emeritus Professor, University of New Brunswick, Fredericton
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Tony Diamond

I was first exposed to seabird research on Skokholm, by Mike Harris, in 1963. After graduating from university I studied seabirds at Aldabra, Indian Ocean, for my Ph.D. (Aberdeen) and in the Caribbean, before establishing long-term research on Machias Seal Island, Bay of Fundy, in 1995. Our focus is on population and feeding ecology of the whole seabird community of alcids (3 species), terns (2 species), storm-petrels and eiders, in relation to oceanographic change. I now serve as advisor to Heather Major who is continuing the Machias Seal project at the Avian Laboratory for Avian Research at the University of New Brunswick.

Sites: Machias Seal

Rachael Orben, Ph.D.

Assistant Professor (Senior Research), Oregon State University
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Rachael Orben

Rachael Orben leads the Seabird Oceanography Lab at Oregon State University. She earned a PhD in Ocean Sciences from the University of California Santa Cruz in 2014. She first discovered seabirds on the Barren Islands in Alaska in 2002. Since then, she has spent many windy days on remote islands in Alaska, Greenland, Antarctica, the Falkland Islands, and occasionally in Oregon. Her lab tackles a range of applied conservation and management research aimed at understanding the impacts of humans and changing environmental conditions on seabird populations.

Sites: Yaquina Head

Ash Bennison, Ph.D.

Science Manager, British Antarctic Survey
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Ash Bennison

Ash is the Science Manager for Bird Island. Ash joined the British Antarctic Survey (BAS) in January 2021, and prior to this worked in Ireland for the last eight years undertaking a variety of research on seabirds and marine mammals. Ash specialises in the spatial ecology of higher predators. Movement is a trait shared by all life on Earth, and Ash’s work looks to understand how the behaviour of individual animals can inform the distribution of species. Ash’s doctoral research focused on seabirds, primarily Northern gannets and puffins, and used tagging technologies to track the movement paths of animals. He has also worked on sharks, sea bass and cetaceans.

Sites: Bird Signy

Richard Phillips, Ph.D.

Professor, British Antarctic Survey
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Richard Phillips

Richard is a seabird ecologist at British Antarctic Survey. His research focuses on many aspects of the ecology and conservation of seabirds. He worked on seabirds in Scotland for his PhD and first couple of postdocs, then shifted focus to the southern hemisphere and has led the BAS research on albatrosses, petrels and skuas since the mid 2000s. He works closely with the Agreement on the Conservation of Albatrosses and BirdLife International to help develop strategies to improve knowledge of seabirds, their threats - particularly from fisheries and climate change - and conservation.

Sites: Bird

Amanda Kuepfer, Ph.D.

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Amanda Kuepfer

I've been working in seabird research and conservation for over 10 years, including in the UK and the Falkland Islands. I took up my role as Seabird Ecologist with Falklands Conservation in 2022, leading on the Falkland Islands Seabird Monitoring Programme  FISMP) and other seabird related work. 

Andrew Stanworth, Ph.D.

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Andrew Stanworth

I've been working in conservation and environment for over 30 years, and in the Falklands for the last 15. I started out in seabird research, and to this day it still remains important part of my work due to the many conservation challenges faced by this group.

Helen Julia Killeen, Ph.D.

Postdoctoral Researcher, Farallon Institute
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Helen Julia Killeen

Helen studies the influence of climate change and human activity on the distribution and demographics of marine species. She is passionate about using science to identify and improve promising approaches to conservation that lead to healthy ecosystems and communities. Helen completed her doctorate at the University of California, Davis where she studied the biophysical responses of plankton to natural and human-driven environmental variability in the California Current. As part of the Global Seabird Working Group, Helen leads statistical analyses to interpret regional and global patterns in seabird demographic trends. Helen is also an adjunct professor and former high school science teacher who prioritizes inclusive teaching, mentorship, and community participation in all aspects of her research.

Erendira Ceballos

Seabirds and Ocean Outreach Fellow, Farallon Institute
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Erendira Ceballos

Erendira is majoring in Environmental Science and is hoping to continue her education to learn more about seabirds. Over the past summers, Erendira was able to go to Alcatraz Island and be part of Bodega Marine Lab’s tours to talk to tourists about seabirds as ecosystem sentinels. Her favorite part was having people realize that something they think is simple, a seabird, can tell researchers and scientists so many things about ocean health.

Julie Thayer, Ph.D.

Principal Scientist, Farallon Institute
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Julie Thayer

Julie has worked in the California Current marine ecosystem for three decades, with a brief hiatus on the north coast of Brazil. She studied at UC Santa Cruz and UC Davis in Marine Biology/Ecology. Julie has conducted research on a variety of top predators (marine birds, mammals, fishes) and their prey in relation to ocean climate. She has worked on forage fish population dynamics, quantified predator diet and bioenergetic consumption, analyzed prey thresholds across predator taxa, and developed seabird indicators for forage fish. She integrates these into frameworks of ecosystem considerations for fisheries management. Recently she has become involved in predicting future abundance of commercially-important fishes off the US West Coast relative to changing ocean conditions. At the Farallon Institute, Julie leads the seabird field science program on Alcatraz Island in California, USA. Julie is also a Research Associate at the UC Santa Cruz Institute of Marine Science, has participated in various federal and state working groups, and collaborates regularly across a wide range of institutions.

Sites: Alcatraz

Sarah Ann Thompson, M.Sc.

Scientist, Farallon Institute
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Sarah Ann Thompson

Sarah Ann is an ecologist who participates in studies of climate effects on top predators, climate variability in the California Current, and predator-prey relationships in the Bering Sea and Gulf of Alaska. She manages Farallon Institute’s at-sea seabird and marine mammal observations database, as well as processes the acoustic krill data collected each year off the California Coast. Sarah Ann also coordinates the Global Seabird Working Group by centralizing breeding success, dietary, and prey availability datasets from around the world. 

Brian Hoover, Ph.D.

Principal Scientist, Farallon Institute
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Brian Hoover

Brian is a marine ecologist who works on the foraging behavior, habitat associations, and spatial ecology of seabirds, and tries to incorporate these perspectives into spatial models of seabirds and their prey. Brian has worked on marine or aquatic birds within California, Alaska, Maine, Nova Scotia, and Wisconsin, and works now both in the office and at sea, participating in 2-3 coastal surveys per year. Brian has also worked in marine science education and outreach, having spent three years teaching university science courses while mentoring undergraduate students on independent and collaborative research projects. His current focus is on linking at-sea and colony estimates of seabird abundance within the context of marine climate change, and developing internship and outreach opportunities that help improve diversity and equity in the next generation of marine scientists. Brian provides ecological analysis for the Global Seabird Working Group. 

Sites: Alcatraz

Gammon Koval, M.Sc.

Scientist, Farallon Institute
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Gammon Koval

Gammon works as a data analyst with the Global Seabird Working Group, helping to curate data used in analyses and publications. He joined the Farallon Institute after earning his Master's Degree from Moss Landing Marine Laboratories and focuses on investigating the response of different species to changes in the environment.

Marisol García-Reyes, Ph.D.

Principal Scientist, Farallon Institute
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Marisol García-Reyes

Marisol has a background in physics and atmospheric science, but she's an oceanographer at heart. She has studied coastal upwelling for over 15 years, focusing on its variability, how it relates to climate, and how it impacts its marine ecosystem. Her current research focuses in two areas: how climate change, variability, and extreme events impact habitat conditions for organisms (in Eastern Boundary Upwelling regions and in the North Pacific and Bering Sea), and how remote sensing temperature and salinity compare to in situ data in these challenging regions. Marisol lends her oceanographic background to the Global Seabird Working Group to help answer questions on how different seabirds are responding to changes in the oceans.

Trond Kristiansen, Ph.D.

Principal Scientist, Farallon Institute
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Trond Kristiansen

Trond is a principal scientist at the Farallon Institute and his research has focused on three different, but complementary research directions: 1) ecology of early life stages of fish, 2) ecosystem processes, dynamics, and variability, and 3) ecosystem-level consequences of climate change. These research foci have grown from various post-doc and research positions both in the U.S. and in Norway over the last ten years. He is also engaged in international working groups in ICES and ESSAS. He provides both oceanography and climate backgrounds to the Global Seabird Working Group, helping answer questions about how seabirds respond to complex oceanographic processes like stratification. 

impacts of warming ocean temperature

Optimum Interpolation Sea Surface Temperature (OISST) trend in degrees per decade between 1984–2023. Red indicates warming versus blue is cooling (range is 1.7°C or 3°F per decade). Data source: ncei.noaa.gov

As our climate changes, there is an urgent need to understand how ocean warming and related shifts impact marine ecosystems and marine life. Our scientific research has already demonstrated that the rate and impact of climate change in our oceans varies geographically.

Northern Hemisphere — Ecosystem changes are more prominent in this region. Not only is there greater land mass, but also a denser human population has used marine resources there for a long period of time. Here, warming effects are strongly coupled with other human impacts.

Southern Hemisphere — Due to the vastness and remoteness of marine ecosystems in this region, it is less impacted by human activities, and has experienced less warming relative to greenhouse gas emissions. However, evidence suggests this may be changing.

Distributed across both hemispheres, seabirds offer vital information about how warming oceans impact marine ecosystems across the world’s oceans.

Stratification

Ocean warming, driven by carbon emissions, causes physical changes in marine environments. For example, warming can strengthen ocean stratification, which can in turn have negative consequences for marine food webs.

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Illustration of a wide variety of thriving marine species with text caption: Ocean stratification occurs because warmer, less dense water floats on top of colder, denser water. This layering creates distinct habitats within the ocean, each supporting different types of marine life.
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Illustration of many types of fish and phytoplankton in deep cool ocean with seabirds above. Text: Life is found everywhere in the ocean, but almost all is fueled by surface phytoplankton. These tiny photosynthesizers require nutrients and light to grow. Their energy is transferred into higher trophic levels: from zooplankton all the way up to larger predators, including seabirds.
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Illustration showing cool deep ocean water mixing with cool surface water driven by wind and rain, bringing nutrients to the surface. Text: Continuous nutrient input is necessary to sustain life. An important reserve of nutrients in the ocean occurs in deep waters, near the bottom. Consequently, vertical mixing mechanisms like storms or wind-driven upwelling, can bring nutrients to phytoplankton in the surface layer.
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Illustration of ocean with band of red and orange layers demonstrating warm ocean water temperature near the surface. Text: Global warming is increasing the temperature of the ocean - faster in the surface than at depth - increasing the difference in density between layers, and strengthening stratification. Strong stratification reduces mixing and upwelling of nutrients to the surface, cutting off the fuel that supports marine food webs.
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Illustration showing less mixing of ocean water, with food sources for seabirds. Text: Stratification is one of the ways that global warming could harm marine ecosystems. Fewer nutrients mean sparser prey, which could be a big problem for top predators like seabirds.

seabird diets

Seabirds rank among the top predators in the marine food web. Food choices differ among species, as do the feeding methods. Therefore, different seabird species can tell us about the health of different parts of marine food webs.

Planktivores — Some seabirds prey on plankton: small marine organisms that drift in water currents. Planktivores often forage in surface waters, but some, like penguins and auklets, hunt in the depths.

Piscivores — Other seabirds prey on fish. Fish can be found at different depths; some seabirds will skim the surface, while others dive to locate deeper fish. Cormorants and terns are examples of piscivores that forage at different depths.

Omnivores — Some seabirds prey on plankton, fish, or whatever they can find. These diets can consist of crabs, squid, or other animals too. Examples of omnivores are albatrosses and many petrels.

seabird species

Currently, the GSWG monitors about 75 seabird species across the northern and southern hemispheres. Use the dropdown menus to explore them!

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Gibson’s wandering albatross
Gibson’s wandering albatross
Diomedea antipodensis gibsoni
Diet: Omnivore   Foraging: Surface
Southern Hemisphere
Sites observed: Adams
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Adelie penguin
Adelie penguin
Pygoscelis adeliae
Diet: Planktivore   Foraging: Deep
Southern Hemisphere
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gentoo penguin
gentoo penguin
Pygoscelis papua
Diet: Omnivore   Foraging: Deep
Southern Hemisphere
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ancient murrelet
ancient murrelet
Synthliboramphus antiquus
Diet: Planktivore   Foraging: Deep
Northern Hemisphere
Sites observed: Aiktak Talan
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common murre
common murre
Uria aalge
Diet: Omnivore   Foraging: Deep
Northern Hemisphere
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double-crested cormorant
double-crested cormorant
Phalacrocorax auritus
Diet: Piscivore   Foraging: Deep
Northern Hemisphere
Sites observed: Aiktak
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fork-tailed storm-petrel
fork-tailed storm-petrel
Hydrobates furcatus
Diet: Planktivore   Foraging: Surface
Northern Hemisphere
Sites observed: Aiktak Buldir St. Lazaria
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horned puffin
horned puffin
Fratercula corniculata
Diet: Piscivore   Foraging: Deep
Northern Hemisphere
Sites observed: Aiktak Buldir Chowiet Talan
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Leach’s storm-petrel
Leach’s storm-petrel
Oceanodroma leucorhoa
Diet: Planktivore   Foraging: Surface
Northern Hemisphere
Sites observed: Aiktak Buldir Gull St. Lazaria
Close
Image
pelagic cormorant
pelagic cormorant
Phalacrocorax pelagicus
Diet: Piscivore   Foraging: Deep
Northern Hemisphere
Close
Image
red-faced cormorant
red-faced cormorant
Phalacrocorax urile
Diet: Piscivore   Foraging: Deep
Northern Hemisphere
Sites observed: Aiktak St. George St. Paul
Close
Image
thick-billed murre
thick-billed murre
Uria lomvia
Diet: Omnivore   Foraging: Deep
Northern Hemisphere
Close
Image
tufted puffin
tufted puffin
Fratercula cirrhata
Diet: Piscivore   Foraging: Deep
Northern Hemisphere
Sites observed: Aiktak Buldir Chowiet Talan
Close
Image
Atlantic puffin
Atlantic puffin
Fratercula arctica
Diet: Piscivore   Foraging: Deep
Northern Hemisphere
Close
Image
Brandt’s cormorant
Brandt’s cormorant
Phalacrocorax penicillatus
Diet: Piscivore   Foraging: Deep
Northern Hemisphere
Close
Image
Amsterdam albatross
Amsterdam albatross
Diomedea amsterdamensis
Diet: Omnivore   Foraging: Surface
Southern Hemisphere
Sites observed: Amsterdam
Close
Image
brown pelican
brown pelican
Pelecanus occidentalis
Diet: Piscivore   Foraging: Surface
Northern Hemisphere
Sites observed: Anacapa Santa Barbara
Close
Image
Antipodean wandering albatross
Antipodean wandering albatross
Diomedea antipodensis antipodensis
Diet: Omnivore   Foraging: Surface
Southern Hemisphere
Sites observed: Antipodes
Close
Image
rockhopper penguin
rockhopper penguin
Diet:   Foraging:
Southern Hemisphere
Close
Image
black-browed albatross
black-browed albatross
Thalassarche melanophris
Diet: Omnivore   Foraging: Surface
Southern Hemisphere
Sites observed: Bird Kerguelen NW Flat
Close
Image
grey-headed albatross
grey-headed albatross
Diet:   Foraging:
Southern Hemisphere
Sites observed: Bird
Close
Image
macaroni penguin
macaroni penguin
Eudyptes chrysolophus
Diet: Omnivore   Foraging: Deep
Southern Hemisphere
Sites observed: Bird
Close
Image
northern giant petrel
northern giant petrel
Diet:   Foraging:
Southern Hemisphere
Sites observed: Bird
Close
Image
southern giant petrel
southern giant petrel
Diet:   Foraging:
Southern Hemisphere
Sites observed: Bird Neck Signy
Close
Image
wandering albatross
wandering albatross
Diomedea exulans
Diet: Omnivore   Foraging: Surface
Southern Hemisphere
Sites observed: Bird Crozet Kerguelen
Close
Image
northern gannet
northern gannet
Diet:   Foraging:
Northern Hemisphere
Sites observed: Bonaventure Shetland
Close
Image
black-legged kittiwake
black-legged kittiwake
Rissa tridactyla
Diet: Piscivore   Foraging: Surface
Northern Hemisphere
Close
Image
crested auklet
crested auklet
Aethia cristatella
Diet: Planktivore   Foraging: Deep
Northern Hemisphere
Sites observed: Buldir Talan
Close
Image
glaucous-winged gull
glaucous-winged gull
Larus glaucescens
Diet: Omnivore   Foraging: Surface
Northern Hemisphere
Sites observed: Buldir Chowiet St. Lazaria
Close
Image
least auklet
least auklet
Aethia pusilla
Diet: Planktivore   Foraging: Deep
Northern Hemisphere
Sites observed: Buldir St. George
Close
Image
parakeet auklet
parakeet auklet
Aethia psittacula
Diet: Planktivore   Foraging: Deep
Northern Hemisphere
Sites observed: Buldir Chowiet Talan
Close
Image
red-legged kittiwake
red-legged kittiwake
Rissa brevirostris
Diet: Piscivore   Foraging: Surface
Northern Hemisphere
Sites observed: Buldir St. George St. Paul
Close
Image
whiskered auklet
whiskered auklet
Aethia pygmaea
Diet: Planktivore   Foraging: Deep
Northern Hemisphere
Sites observed: Buldir
Close
Image
chinstrap penguin
chinstrap penguin
Pygoscelis antarcticus
Diet: Planktivore   Foraging: Deep
Southern Hemisphere
Sites observed: Cape Shirreff Signy
Close
Image
arctic tern
arctic tern
Sterna paradisaea
Diet: Piscivore   Foraging: Surface
Northern Hemisphere
Close
Image
common tern
common tern
Sterna hirundo
Diet: Piscivore   Foraging: Surface
Northern Hemisphere
Close
Image
sooty albatross
sooty albatross
Phoebetria fusca
Diet: Omnivore   Foraging: Surface
Southern Hemisphere
Sites observed: Crozet
Close
Image
African penguin
African penguin
Spheniscus demersus
Diet: Piscivore   Foraging: Deep
Southern Hemisphere
Sites observed: Dassen Robben
Close
Image
Audouin’s gull
Audouin’s gull
Diet:   Foraging:
Northern Hemisphere
Sites observed: Ebro Delta
Close
Image
parasitic jaeger
parasitic jaeger
Stercorarius parasiticus
Diet: Omnivore   Foraging: Surface
Northern Hemisphere
Sites observed: Fair Isle Foula
Close
Image
great skua
great skua
Stercorarius skua
Diet: Omnivore   Foraging: Surface
Northern Hemisphere
Sites observed: Foula
Close
Image
black petrel
black petrel
Procellaria parkinsoni
Diet: Planktivore   Foraging: Surface
Southern Hemisphere
Sites observed: Hirakimata
Close
Image
razorbill
razorbill
Alca torda
Diet: Omnivore   Foraging: Deep
Northern Hemisphere
Close
Image
grey-faced petrel
grey-faced petrel
Pterodroma gouldi
Diet: Omnivore   Foraging: Surface
Southern Hemisphere
Sites observed: Ihumoana
Close
Image
European shag
European shag
Phalacrocorax aristotelis
Diet: Piscivore   Foraging: Deep
Northern Hemisphere
Close
Image
northern fulmar
northern fulmar
Fulmarus glacialis
Diet: Omnivore   Foraging: Surface
Northern Hemisphere
Sites observed: Isle of May Shetland
Close
Image
Laysan albatross
Laysan albatross
Phoebastria immutabilis
Diet: Omnivore   Foraging: Surface
Southern Hemisphere
Sites observed: Kaena Midway Tern
Close
Image
wedge-tailed shearwater
wedge-tailed shearwater
Ardenna pacifica
Diet: Omnivore   Foraging: Deep
Southern Hemisphere
Sites observed: Kaena Reunion Varanus
Close
Image
red-billed gull
red-billed gull
Chroicocephalus novaehollandiae scopulinus
Diet: Planktivore   Foraging: Surface
Southern Hemisphere
Sites observed: Kaikoura
Close
Image
flesh-footed shearwater
flesh-footed shearwater
Ardenna carneipes
Diet: Piscivore   Foraging: Surface
Southern Hemisphere
Sites observed: Kauwahaia
Close
Image
sooty shearwater
sooty shearwater
Ardenna grisea
Diet: Omnivore   Foraging: Deep
Southern Hemisphere
Sites observed: Kauwahaia
Close
Image
blue petrel
blue petrel
Halobaena caerulea
Diet: Planktivore   Foraging: Surface
Southern Hemisphere
Sites observed: Kerguelen
Close
Image
brown skua
brown skua
Stercorarius antarcticus
Diet: Omnivore   Foraging: Surface
Southern Hemisphere
Sites observed: Kerguelen
Close
Image
thin-billed prion
thin-billed prion
Pachyptila belcheri
Diet: Planktivore   Foraging: Surface
Southern Hemisphere
Sites observed: Kerguelen
Close
Image
Cape gannet
Cape gannet
Morus capensis
Diet: Piscivore   Foraging: Surface
Southern Hemisphere
Sites observed: Lamberts Malgas
Close
Image
rhinoceros auklet
rhinoceros auklet
Cerorhinca monocerata
Diet: Omnivore   Foraging: Deep
Northern Hemisphere
Sites observed: Middleton SE Farallon Teuri
Close
Image
black-footed albatross
black-footed albatross
Phoebastria nigripes
Diet: Omnivore   Foraging: Surface
Southern Hemisphere
Sites observed: Midway Tern
Close
Image
little penguin
little penguin
Eudyptula minor
Diet: Piscivore   Foraging: Deep
Southern Hemisphere
Sites observed: Oamaru Penguin Phillip
Close
Image
lesser noddy
lesser noddy
Anous tenuirostris
Diet: Piscivore   Foraging: Surface
Southern Hemisphere
Sites observed: Pelsaert
Close
Image
emperor penguin
emperor penguin
Aptenodytes forsteri
Diet: Piscivore   Foraging: Deep
Southern Hemisphere
Sites observed: Pointe Geologie
Close
Image
snow petrel
snow petrel
Pagodroma nivea
Diet: Planktivore   Foraging: Surface
Southern Hemisphere
Sites observed: Pointe Geologie
Close
Image
south polar skua
south polar skua
Stercorarius maccormicki
Diet: Omnivore   Foraging: Surface
Southern Hemisphere
Sites observed: Pointe Geologie
Close
Image
southern fulmar
southern fulmar
Fulmarus glacialoides
Diet: Omnivore   Foraging: Surface
Southern Hemisphere
Sites observed: Pointe Geologie
Close
Image
Magellanic penguin
Magellanic penguin
Spheniscus magellanicus
Diet: Omnivore   Foraging: Deep
Southern Hemisphere
Sites observed: Punta Tombo
Close
Image
Chatham petrel
Chatham petrel
Pterodroma axillaris
Diet: Planktivore   Foraging: Surface
Southern Hemisphere
Sites observed: Rangatira
Close
Image
Heermann’s gull
Heermann’s gull
Larus heermanni
Diet: Piscivore   Foraging: Surface
Northern Hemisphere
Sites observed: Rasa
Close
Image
Barau’s petrel
Barau’s petrel
Diet:   Foraging:
Southern Hemisphere
Sites observed: Reunion
Close
Image
ashy storm-petrel
ashy storm-petrel
Hydrobates homochroa
Diet: Planktivore   Foraging: Surface
Northern Hemisphere
Sites observed: SE Farallon
Close
Image
Cassin’s auklet
Cassin’s auklet
Ptychoramphus aleuticus
Diet: Planktivore   Foraging: Deep
Northern Hemisphere
Sites observed: SE Farallon
Close
Image
pigeon guillemot
pigeon guillemot
Cepphus columba
Diet: Piscivore   Foraging: Deep
Northern Hemisphere
Sites observed: SE Farallon
Close
Image
western gull
western gull
Larus occidentalis
Diet: Omnivore   Foraging: Surface
Northern Hemisphere
Sites observed: SE Farallon
Close
Image
black-tailed gull
black-tailed gull
Larus crassirostris
Diet: Omnivore   Foraging: Surface
Northern Hemisphere
Sites observed: Teuri
Close
Image
Japanese cormorant
Japanese cormorant
Phalacrocorax capillatus
Diet: Piscivore   Foraging: Deep
Northern Hemisphere
Sites observed: Teuri
    No items were found matching the selected filters

Above: European shags and Great cormorant on a rock of Gjesværstappan islands, Norway.

Credit: Credit: alxpin

why monitor breeding success

Seabirds are easily observed on land and ice (e.g., emperor penguins) during their breeding seasons. Breeding success refers to the number of eggs laid and the survival of the chicks once they hatch. Monitoring breeding success provides researchers insight into “seabird productivity”, and the overall health and stability of populations. If there is a significant change in their breeding success, it could indicate a change in environmental factors, such as food availability.

observation sites

Seabird breeding colonies make good research sites because adults and chicks can be observed and studied relatively easily; seabird colonies can be found along most coastlines and islands around the world. Currently, the GSWG monitors seabirds at 87 sites in the Southern and Northern hemisphere. Spin the globe below and click on the different sites to learn more about these fascinating colonies.

breeding success data by site

No items were found matching the selected filters

Adams

Southern Ocean > Subantarctic New Zealand > Auckland Island
View on globe Latitude: -50.9  Longitude: 166

Gibson’s wandering albatross

Data
1990–2018

Admiralty

Southern Ocean > Scotia Sea > South Shetland Islands
View on globe Latitude: -62.18  Longitude: -58.44

Adelie penguin

Data
1977–2021

gentoo penguin

Data
1990–2021

Aiktak

Temperate Northern Pacific > Cold Temperate Northeast Pacific > Aleutian Islands
View on globe Latitude: 54.19  Longitude: -164.84

tufted puffin

Data
1995–2022

Leach’s storm-petrel

Data
1995–2022

ancient murrelet

Data
1997–2022

common murre

Data
1995–2022

double-crested cormorant

Data
2000–2021

fork-tailed storm-petrel

Data
1995–2022

horned puffin

Data
1996–2022

pelagic cormorant

Data
1995–2017

red-faced cormorant

Data
1997–2019

thick-billed murre

Data
1995–2022

Akurey

Temperate Northern Atlantic > Northern European Seas > South and West Iceland
View on globe Latitude: 64.17  Longitude: -21.95

Atlantic puffin

Data
2010–2022

Alcatraz

Temperate Northern Pacific > Cold Temperate Northeast Pacific > Northern California
View on globe Latitude: 37.83  Longitude: -122.42

Brandt’s cormorant

Data
1995–2021

Amsterdam

Temperate Southern Africa > Amsterdam-St Paul > Amsterdam-St Paul
View on globe Latitude: -37.82  Longitude: 77.53

Amsterdam albatross

Data
1981–2021

Anacapa

Temperate Northern Pacific > Warm Temperate Northeast Pacific > Southern California Bight
View on globe Latitude: 34  Longitude: -119.39

brown pelican

Data
1975–2020

Berkley Sound

Temperate South America > Magellanic > Malvinas/Falklands
View on globe Latitude: -51.54  Longitude: -57.8

rockhopper penguin

Data
2003–2022

Bird

Southern Ocean > Scotia Sea > South Georgia
View on globe Latitude: -54.01  Longitude: -38.05

black-browed albatross

Data
1987–2021

gentoo penguin

Data
1982–2021

grey-headed albatross

Data
1988–2021

macaroni penguin

Data
1982–2021

northern giant petrel

Data
2000–2021

southern giant petrel

Data
2000–2021

wandering albatross

Data
1977–2020

Bjornoya

Arctic > Arctic > North and East Barents Sea
View on globe Latitude: 74.2  Longitude: 19.08

common murre

Data
2005–2021

Bonaventure

Temperate Northern Atlantic > Cold Temperate Northwest Atlantic > Gulf of St. Lawrence - Eastern Scotian Shelf
View on globe Latitude: 48.5  Longitude: -64.16

northern gannet

Data
1970–2022

Buldir

Temperate Northern Pacific > Cold Temperate Northeast Pacific > Aleutian Islands
View on globe Latitude: 52.36  Longitude: 175.92

black-legged kittiwake

Data
1988–2022

common murre

Data
1989–2021

crested auklet

Data
1988–2022

glaucous-winged gull

Data
1997–2022

horned puffin

Data
1988–2022

least auklet

Data
1988–2022

parakeet auklet

Data
1991–2022

pelagic cormorant

Data
1990–2014

red-legged kittiwake

Data
1988–2022

thick-billed murre

Data
1988–2022

tufted puffin

Data
1988–2022

whiskered auklet

Data
1988–2022

Leach’s storm-petrel

Data
1974–2022

Bull Point

Temperate South America > Magellanic > Malvinas/Falklands
View on globe Latitude: -52.34  Longitude: -59.32

gentoo penguin

Data
1990–2022

Cape Lisburne

Arctic > Arctic > Chukchi Sea
View on globe Latitude: 68.88  Longitude: -166.21

black-legged kittiwake

Data
1976–2019

Cape Peirce

Arctic > Arctic > Eastern Bering Sea
View on globe Latitude: 58.55  Longitude: -161.77

common murre

Data
1990–2018

pelagic cormorant

Data
1990–2018

black-legged kittiwake

Data
1990–2018

Cape Shirreff

Southern Ocean > Scotia Sea > South Shetland Islands
View on globe Latitude: -62.46  Longitude: -60.79

chinstrap penguin

Data
1997–2020

gentoo penguin

Data
1998–2020

Chowiet

Temperate Northern Pacific > Cold Temperate Northeast Pacific > Gulf of Alaska
View on globe Latitude: 56.03  Longitude: -156.7

black-legged kittiwake

Data
1979–2021

common murre

Data
1979–2021

glaucous-winged gull

Data
1998–2021

horned puffin

Data
2004–2021

parakeet auklet

Data
1998–2021

thick-billed murre

Data
1979–2021

tufted puffin

Data
2005–2021

Coats

Arctic > Arctic > Hudson Complex
View on globe Latitude: 62.95  Longitude: -82.01

thick-billed murre

Data
1990–2022

Country

Temperate Northern Atlantic > Cold Temperate Northwest Atlantic > Scotian Shelf
View on globe Latitude: 45.1  Longitude: -61.54

arctic tern

Data
1998–2019

common tern

Data
1998–2019

Crozet

Southern Ocean > Subantarctic Islands > Crozet Islands
View on globe Latitude: -46.42  Longitude: 51.83

sooty albatross

Data
1981–2021

wandering albatross

Data
1984–2021

Dassen

Temperate Southern Africa > Benguela > Namaqua
View on globe Latitude: -33.42  Longitude: 18.09

African penguin

Data
1995–2019

East Amatuli

Temperate Northern Pacific > Cold Temperate Northeast Pacific > Gulf of Alaska
View on globe Latitude: 58.92  Longitude: -151.99

black-legged kittiwake

Data
1993–2022

common murre

Data
1993–2021

Eastern Egg Rock

Temperate Northern Atlantic > Cold Temperate Northwest Atlantic > Gulf of Maine/Bay of Fundy
View on globe Latitude: 43.86  Longitude: -69.38

arctic tern

Data
1993–2019

common tern

Data
1991–2019

Ebro Delta

Temperate Northern Atlantic > Mediterranean Sea > Western Mediterranean
View on globe Latitude: 40.56  Longitude: 0.66

Audouin’s gull

Data
1991–2021

Fanning Harbour

Temperate South America > Magellanic > Malvinas/Falklands
View on globe Latitude: -51.46  Longitude: -59.09

gentoo penguin

Data
1993–2022

Fanning Head

Temperate South America > Magellanic > Malvinas/Falklands
View on globe Latitude: -51.46  Longitude: -59.14

rockhopper penguin

Data
1993–2022

Foula

Temperate Northern Atlantic > Northern European Seas > North Sea
View on globe Latitude: 60.14  Longitude: -2.08

parasitic jaeger

Data
1971–2020

arctic tern

Data
1971–2020

black-legged kittiwake

Data
1971–2020

great skua

Data
1971–2020

Fox Point Fitzroy

Temperate South America > Magellanic > Malvinas/Falklands
View on globe Latitude: -51.92  Longitude: -58.45

gentoo penguin

Data
1991–2022

Grimsey

Arctic > Arctic > North and East Iceland
View on globe Latitude: 66.55  Longitude: -18

Atlantic puffin

Data
2011–2022

Gull

Arctic > Arctic > Northern Grand Banks - Southern Labrador
View on globe Latitude: 47.26  Longitude: -52.77

Leach’s storm-petrel

Data
2003–2022

Hirakimata

Temperate Australasia > Northern New Zealand > Northeastern New Zealand
View on globe Latitude: -36.18  Longitude: 175.41

black petrel

Data
1997–2020

Hornoya

Temperate Northern Atlantic > Northern European Seas > Northern Norway and Finnmark
View on globe Latitude: 70.39  Longitude: 31.16

Atlantic puffin

Data
1980–2021

black-legged kittiwake

Data
1988–2021

black-legged kittiwake

Data
2001–2018

razorbill

Data
1980–2021

House

Temperate South America > Magellanic > Malvinas/Falklands
View on globe Latitude: -51.02  Longitude: -61.23

gentoo penguin

Data
2004–2022

Ihumoana

Temperate Australasia > Southern New Zealand > Central New Zealand
View on globe Latitude: -36.89  Longitude: 174.44

grey-faced petrel

Data
1993–2020

Isle of May

Temperate Northern Atlantic > Northern European Seas > North Sea
View on globe Latitude: 56.19  Longitude: -2.56

Atlantic puffin

Data
1977–2021

European shag

Data
1987–2022

black-legged kittiwake

Data
1987–2022

common murre

Data
1982–2022

northern fulmar

Data
1987–2022

razorbill

Data
1982–2022

Jenny

Temperate Northern Atlantic > Cold Temperate Northwest Atlantic > Gulf of Maine/Bay of Fundy
View on globe Latitude: 43.77  Longitude: -69.91

common tern

Data
1991–2019

Kaena

Eastern Indo-Pacific > Hawaii > Hawaii
View on globe Latitude: 21.57  Longitude: -158.28

wedge-tailed shearwater

Data
1995–2022

Kaikoura

Temperate Australasia > Southern New Zealand > Central New Zealand
View on globe Latitude: -42.4  Longitude: 173.68

Kauwahaia

Temperate Australasia > Southern New Zealand > Central New Zealand
View on globe Latitude: -36.89  Longitude: 174.44

flesh-footed shearwater

Data
1990–2021

sooty shearwater

Data
1993–2021

Kerguelen

Southern Ocean > Subantarctic Islands > Kerguelen Islands
View on globe Latitude: -48.4  Longitude: 68.37

black-browed albatross

Data
1979–2020

blue petrel

Data
1987–2020

brown skua

Data
1991–2020

thin-billed prion

Data
1986–2020

wandering albatross

Data
2000–2021

Lamberts

Temperate Southern Africa > Benguela > Namaqua
View on globe Latitude: -32.08  Longitude: 18.3

Cape gannet

Data
1990–2020

Machias Seal

Temperate Northern Atlantic > Cold Temperate Northwest Atlantic > Gulf of Maine/Bay of Fundy
View on globe Latitude: 44.5  Longitude: -67.1

Atlantic puffin

Data
1995–2022

razorbill

Data
1995–2022

Malgas

Temperate Southern Africa > Benguela > Namaqua
View on globe Latitude: -33.05  Longitude: 17.93

Cape gannet

Data
1987–2020

Matinicius Rock

Temperate Northern Atlantic > Cold Temperate Northwest Atlantic > Gulf of Maine/Bay of Fundy
View on globe Latitude: 43.79  Longitude: -68.85

Atlantic puffin

Data
2005–2019

arctic tern

Data
1986–2019

common tern

Data
2002–2019

Middleton

Temperate Northern Pacific > Cold Temperate Northeast Pacific > Gulf of Alaska
View on globe Latitude: 59.44  Longitude: -146.33

pelagic cormorant

Data
2002–2022

rhinoceros auklet

Data
1995–2022

black-legged kittiwake

Data
1996–2022

Midway

Eastern Indo-Pacific > Hawaii > Hawaii
View on globe Latitude: 28.21  Longitude: -177.38

Laysan albatross

Data
2006–2021

black-footed albatross

Data
2006–2021

Neck

Temperate South America > Magellanic > Malvinas/Falklands
View on globe Latitude: -51.04  Longitude: -61.21

southern giant petrel

Data
2004–2022

NW Flat

Temperate South America > Magellanic > Malvinas/Falklands
View on globe Latitude: -51.01  Longitude: -61.25

black-browed albatross

Data
2004–2022

Oamaru

Temperate Australasia > Southern New Zealand > South New Zealand
View on globe Latitude: -45.11  Longitude: 170.98

little penguin

Data
1994–2021

Outer Green

Temperate Northern Atlantic > Cold Temperate Northwest Atlantic > Gulf of Maine/Bay of Fundy
View on globe Latitude: 43.65  Longitude: -70.12

common tern

Data
2003–2019

Palmer

Southern Ocean > Scotia Sea > Antarctic Peninsula
View on globe Latitude: -64.77  Longitude: -64.05

Adelie penguin

Data
1991–2020

Papey

Arctic > Arctic > North and East Iceland
View on globe Latitude: 64.58  Longitude: -14.17

Atlantic puffin

Data
2010–2022

Pelsaert

Temperate Australasia > West Central Australian Shelf > Houtman
View on globe Latitude: -28.9  Longitude: 113.9

lesser noddy

Data
1991–2021

Penguin

Temperate Australasia > Southwest Australian Shelf > Leeuwin
View on globe Latitude: -32.31  Longitude: 115.69

little penguin

Data
1986–2019

Phillip

Temperate Australasia > Southeast Australian Shelf > Bassian
View on globe Latitude: -38.48  Longitude: 145.23

little penguin

Data
1968–2016

Pointe Geologie

Southern Ocean > Continental High Antarctic > East Antarctic Wilkes Land
View on globe Latitude: -66.67  Longitude: 140.02

snow petrel

Data
1968–2020

Adelie penguin

Data
1993–2021

south polar skua

Data
1968–2020

southern fulmar

Data
1968–2020

Pond

Temperate Northern Atlantic > Cold Temperate Northwest Atlantic > Gulf of Maine/Bay of Fundy
View on globe Latitude: 43.73  Longitude: -69.97

common tern

Data
2000–2019

Punta Tombo

Temperate South America > Magellanic > North Patagonian Gulfs
View on globe Latitude: -44.05  Longitude: -65.22

Magellanic penguin

Data
1983–2019

Rangatira

Temperate Australasia > Southern New Zealand > Chatham Island
View on globe Latitude: -44.35  Longitude: -176.17

Chatham petrel

Data
1993–2021

Rasa

Temperate Northern Pacific > Warm Temperate Northeast Pacific > Cortezian
View on globe Latitude: 28.82  Longitude: -112.98

Heermann’s gull

Data
1980–2022

Reunion

Western Indo-Pacific > Western Indian Ocean > Mascarene Islands
View on globe Latitude: -21.33  Longitude: 55.8

Barau’s petrel

Data
2008–2021

wedge-tailed shearwater

Data
2007–2021

Robben

Temperate Southern Africa > Benguela > Namaqua
View on globe Latitude: -33.8  Longitude: 18.37

African penguin

Data
1989–2019

Røst

Temperate Northern Atlantic > Northern European Seas > Northern Norway and Finnmark
View on globe Latitude: 67.52  Longitude: 12.1

black-legged kittiwake

Data
1980–2021

European shag

Data
2011–2021

black-legged kittiwake

Data
1981–2021

Santa Barbara

Temperate Northern Pacific > Warm Temperate Northeast Pacific > Southern California Bight
View on globe Latitude: 33.48  Longitude: -119.04

brown pelican

Data
1980–2020

SE Farallon

Temperate Northern Pacific > Cold Temperate Northeast Pacific > Northern California
View on globe Latitude: 37.72  Longitude: -123.03

western gull

Data
1971–2021

Brandt’s cormorant

Data
1971–2021

Cassin’s auklet

Data
1971–2021

ashy storm-petrel

Data
1971–2021

common murre

Data
1972–2021

pelagic cormorant

Data
1971–2021

pigeon guillemot

Data
1971–2021

rhinoceros auklet

Data
1986–2021

Seal Island NWR

Temperate Northern Atlantic > Cold Temperate Northwest Atlantic > Gulf of Maine/Bay of Fundy
View on globe Latitude: 43.89  Longitude: -68.74

Atlantic puffin

Data
2006–2019

arctic tern

Data
1989–2019

common tern

Data
1991–2019

Sealion

Temperate South America > Magellanic > Malvinas/Falklands
View on globe Latitude: -52.45  Longitude: -59.12

rockhopper penguin

Data
1999–2022

Shetland

Temperate Northern Atlantic > Northern European Seas > North Sea
View on globe Latitude: 60.41  Longitude: -1.26

European shag

Data
1986–2020

arctic tern

Data
1980–2020

black-legged kittiwake

Data
1986–2020

northern fulmar

Data
1986–2020

northern gannet

Data
1986–2020

Signy

Southern Ocean > Scotia Sea > South Orkney Islands
View on globe Latitude: -60.72  Longitude: -45.6

Adelie penguin

Data
1979–2019

chinstrap penguin

Data
1978–2019

gentoo penguin

Data
1979–2019

southern giant petrel

Data
1996–2021

Sklinna

Temperate Northern Atlantic > Northern European Seas > Southern Norway
View on globe Latitude: 65.21  Longitude: 12

European shag

Data
2008–2022

St. George

Arctic > Arctic > Eastern Bering Sea
View on globe Latitude: 56.57  Longitude: -169.61

black-legged kittiwake

Data
1976–2022

common murre

Data
1978–2022

least auklet

Data
2008–2022

red-faced cormorant

Data
2000–2022

red-legged kittiwake

Data
1981–2022

thick-billed murre

Data
1977–2022

St. Lazaria

Temperate Northern Pacific > Cold Temperate Northeast Pacific > North American Pacific Fijordland
View on globe Latitude: 56.99  Longitude: -135.7

Leach’s storm-petrel

Data
1995–2021

common murre

Data
1994–2021

fork-tailed storm-petrel

Data
1995–2021

glaucous-winged gull

Data
1994–2021

pelagic cormorant

Data
1994–2021

thick-billed murre

Data
1994–2021

St. Paul

Arctic > Arctic > Eastern Bering Sea
View on globe Latitude: 57.2  Longitude: -170.28

thick-billed murre

Data
1976–2022

black-legged kittiwake

Data
1975–2022

common murre

Data
1976–2022

red-faced cormorant

Data
1975–2022

red-legged kittiwake

Data
1984–2022

Stora Karlsö

Temperate Northern Atlantic > Northern European Seas > Baltic Sea
View on globe Latitude: 57.28  Longitude: 17.97

common murre

Data
1974–2022

Stratton

Temperate Northern Atlantic > Cold Temperate Northwest Atlantic > Gulf of Maine/Bay of Fundy
View on globe Latitude: 43.51  Longitude: -70.31

common tern

Data
1988–2019

Study Site

Temperate South America > Magellanic > Malvinas/Falklands
View on globe Latitude: -51.05  Longitude: -61.21

rockhopper penguin

Data
2007–2022

Talan

Temperate Northern Pacific > Cold Temperate Northwest Pacific > Sea of Okhotsk
View on globe Latitude: 59.31  Longitude: 149.08

ancient murrelet

Data
1988–2019

black-legged kittiwake

Data
1988–2019

common murre

Data
1989–2019

crested auklet

Data
1987–2019

horned puffin

Data
1987–2019

parakeet auklet

Data
1987–2019

thick-billed murre

Data
1989–2019

tufted puffin

Data
1987–2019

Tern

Eastern Indo-Pacific > Hawaii > Hawaii
View on globe Latitude: 23.87  Longitude: -166.28

Laysan albatross

Data
1980–2010

black-footed albatross

Data
1980–2010

Teuri

Temperate Northern Pacific > Cold Temperate Northwest Pacific > Sea of Japan/East Sea
View on globe Latitude: 44.42  Longitude: 141.3

Japanese cormorant

Data
1992–2021

black-tailed gull

Data
1980–2021

rhinoceros auklet

Data
1984–2021

Varanus

Central Indo-Pacific > Northwest Australian Shelf > Exmouth to Broome
View on globe Latitude: -20.65  Longitude: 115.57

wedge-tailed shearwater

Data
1994–2021

Vestmannaeyjar

Temperate Northern Atlantic > Northern European Seas > South and West Iceland
View on globe Latitude: 63.4  Longitude: -20.28

Atlantic puffin

Data
1971–2024

Volunteer Green

Temperate South America > Magellanic > Malvinas/Falklands
View on globe Latitude: -51.48  Longitude: -57.84

gentoo penguin

Data
1990–2022

Wilhelmshaven

Temperate Northern Atlantic > Northern European Seas > North Sea
View on globe Latitude: 53.51  Longitude: 8.11

common tern

Data
1981–2020

Yaquina Head

Temperate Northern Pacific > Cold Temperate Northeast Pacific > Oregon, Washington, Vancouver Coast and Shelf
View on globe Latitude: 44.68  Longitude: -124.08

Brandt’s cormorant

Data
2008–2021

pelagic cormorant

Data
2008–2021

data summary and analysis

Scientists, including those at the Farallon Institute, use mathematical models to make sense of seabird breeding success observations across species, sites, and hemispheres. These models can help us understand how seabirds themselves and the ecosystems they live in are changing as the planet warms and the oceans stratify. The analysis below was published in 2021 with data on 66 species collected over the period of 1964 to 2018. Farallon Institute is in the process of expanding this analysis to include additional species and sites including recent year data.

Normalized breeding productivity (± standard error)
Image
Chart

Trends in individual time series (dashed lines) are shown as background.

Image
Chart

Trends in individual time series (dashed lines) are shown as background.

Image
Chart

Trends in individual time series (dashed lines) are shown as background.

Our study indicates that breeding productivity of fish-eating and omnivorous seabirds is in decline, particularly in the Northern Hemisphere. Planktivores, though, show signs of resilience, with little change in their breeding success. Implications of our studies for Southern Hemisphere seabirds and their ecosystems demonstrate less urgency, although there are regional exceptions, especially among the remote islands of the Southern Ocean.

Probability of breeding failure (± standard error)
Image
Chart
Image
Chart

Observations of breeding success or failure are provided 
as background points, colored by hemisphere.

Image
Chart
Image
Chart

Observations of breeding success or failure are provided 
as background points, colored by hemisphere.

Image
Chart
Image
Chart

Observations of breeding success or failure are provided 
as background points, colored by hemisphere.

The chance of colony breeding failure — no chicks produced in a given year — is also rising for Northern Hemisphere omnivores and piscivores. Dwindling productivity of seabirds across the North, with its greater rate of warming and history of resource extraction, suggests that the combined impacts of climate change and declining prey are creating problems for top marine predators like seabirds.

field notes

While multi-species, multi-site mathematical models can help us to understand global patterns among seabirds and ecosystems, each study site is unique. Explore stories from some breeding colonies below. 

Philippa Agnew, Ph.D.

Philippa Agnew, Ph.D.

Science & Environmental Manager, Ōamaru Blue Penguin Colony
Image
Philippa Agnew

Philippa has worked with little penguins for 20 years and began at the Ōamaru Blue Penguin Colony in 2006. She developed a research programme, using both long-term monitoring data and foraging research to better understand little penguin ecology and potential impacts of climate change on the species. She has continued to drive the science work at the Colony to improve conservation outcomes and provide support to other little penguin researchers in New Zealand.

Sites: Oamaru

Long-term monitoring of the penguins began at the Ōamaru Blue Penguin Colony’s establishment in 1993. Population trends in breeding success and survival, in response to environmental variables through time, have been examined. The key finding was the negative impact that storms have on the penguins’ breeding success and potentially survival depending on the storm severity. Conservation actions at the site include predator trapping, the provision of habitat and measures to reduce disturbance to the penguins. The result of these actions is an average annual increase in the population of 8%.

Daniel Oro

Daniel Oro

Professor, CEAB (CSIC)
Image
Daniel Oro

Professor Daniel Oro is an ecologist at the Center for Advanced Studies of Blanes, Spain (CEAB-CSIC). His research focuses on population dynamics, conservation biology, and ecological resilience, with a particular emphasis on seabird and island ecosystems. He has contributed significantly to understanding human-wildlife interactions and their ecological implications. His work bridges academic research and practical conservation efforts globally.

Sites: Ebro Delta

The Ebro Delta site was protected in 1986. Since then, it harbors one of the largest and most diverse seabird communities in the Mediterranean, including emblematic species such as Audouin’s gulls and Sandwich terns.

I arrived here in 1991 and started my fieldwork in 1992. This was the starting point of my PhD thesis, before moving to France and Scotland to complete several post-doc positions. At the site, we have banded more than 60,000 chicks and resighted more than 80,000 banded birds to study the demography of Audouin’s gulls.

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The original monitoring team composed by only three people (from left to right): Albert Bertolero, Meritxell Genovart and Daniel Oro.

The original monitoring team composed by only three people (from left to right): Albert Bertolero, Meritxell Genovart and Daniel Oro.

Image
Belinda Cannell

University of Western Australia; Murdoch University

Sites: Penguin

Little Penguins are burrowing seabirds, but they do not dig burrows on Penguin Island, Western Australia, as the sandy substrate is too friable. Rather, they nest under the shrubs, in caves, as well as in nestboxes first placed around the island in 1986. They breed asynchronously, and in WA, this is typically from April-December. They usually lay two eggs, incubation is 5-6 weeks, chicks are guarded for 2-3 weeks after hatching, and chicks fledge at approximately 8 weeks. Both parents share the incubation and chick-rearing. The penguins can lay, and raise, two clutches a year under favourable conditions.

The nestboxes on Penguin Island have been monitored regularly from 1986-2019, except for 1993, 2004 and 2005. Excluding these years, the boxes were monitored on average every 8 ± 6 (SD) days (total number of visits=1069) during the breeding season. The presence of adults, eggs and chicks were noted, as well as adult identity (from flipper bands or microchips) and sex (determined by the depth of the beak), chick identity (chicks marked at approximately 6 weeks of age), and mass of both adults and chicks.

Image
Adult Little Penguin with 2 chicks less than 1 week old

Adult Little Penguin with 2 chicks < 1 week old.

Credit: Belinda Cannell

Jefferson Hinke, Ph.D.

Jefferson Hinke, Ph.D.

Research Fishery Biologist, U.S. AMLR Program
Image
Jefferson HInke

Jefferson Hinke leads seabird research for the U.S. Antarctic Marine Living Resources Program within NOAA Fisheries. He earned Ph.D. in Marine Biology from Scripps Institution of Oceanography at UC – San Diego in 2012. His research focuses on the ecology of Pygoscelis penguins and their interactions with fisheries, changing food webs, climate, and other environmental stressors that affect the marine ecosystem in the Antarctic Peninsula region.

Since research at Copacabana Field Camp in Admiralty Bay began in the late 1970s, the abundance of Adélie and chinstrap penguins has declined >70%. In contrast, the abundance of gentoo penguins increased more than 5-fold. Based on the most recent census, the Copacabana colony holds >8000 breeding pairs and is among the largest known gentoo colonies in the world. Moreover, these trends demonstrate a near-complete reversal in colony composition from the ice-loving Adélie-dominated community to an ice-averse gentoo-dominated community.

Image
gentoo with chick Admiralty Bay

Gentoo penguin with its chick, Copacabana Colony, Admiralty Bay.

Credit: Jefferson Hinke

Image
Elizabeth Bell

Passionate seabird and island restoration ecologist.

Sites: Antipodes

A difficult burrow and sneaky bird just out of reach from three different directions and alternative burrow entrances. A team of three researchers having to work together to get the breeding adult out for identification.

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When 3 people are needed to get a BP out of a burrow

When 3 people are needed to get a bird out of a burrow.

Credit: Biz Bell, WMIL

Scott Hatch, Ph.D.

President & Senior Scientist, Institute for Seabird Research and Conservation
Image
Scott Hatch

I retired in 2012 after 37 years as a Research Wildlife Biologist with the U.S. Geological Survey and U.S. Fish and Wildlife Service in Alaska, over which time I conducted studies of seabird reproduction and feeding ecology at numerous colony sites around the coast of Alaska. Since retirement I continue to work under the auspices of the Institute for Seabird Research and Conservation, a nonprofit founded principally for the purpose of developing a field station and continuing long-term seabird research and monitoring on Middleton Island in the Gulf of Alaska.

Sites: Middleton

Video tour of Middleton Island and seabird research station by Adam Peck-Richardson

Christopher A Surman, Ph.D.

Christopher A Surman, Ph.D.

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Christopher A Surman

Chris has been studying the ecology of seabird communities across the Eastern Indian Ocean region for the past 33 years.  Based at the Houtman Abrolhos, an archipelago of 195 islands in Western Australia.  He is currently researching oceanographic impacts on breeding, community ecology, GLS/GPS tracking, demography and impacts of marine debris in nests of terns, noddies and shearwaters.

Christophe Barbraud, Ph.D.

Image
Christophe Barbraud

After a PhD on seabirds at the Centre d'Etudes Biologiques de Chizé and a post-doctorate at Tour du Valat, I joined CNRS in 2001. I am studying the ecology, demography, population dynamics and impact of global change on seabirds, and regularly carry out fieldwork in the Southern Ocean, Antarctica and France.

Our program uses seabirds as sentinels of Southern Ocean marine ecosystems. Through a network of 4 observatories from Antarctica to the subtropics (Pointe Géologie, Kerguelen, Crozet, Amsterdam) supported by IPEV, populations of several seabird species have been monitored for more than 50 years. Long-term individual information, combined with studies on feeding ecology, is used to understand the processes through which climate affects marine ecosystems and to make scenarios on the future effects of climate change on seabirds. The program integrates the impact of fisheries bycatch to propose conservation measures.

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Mayes Field Hut

The French Polar Institute (IPEV) deploys field huts in remote sites to help monitoring seabird populations.

Credit: Christophe Barbraud

Jonas Hentati-Sundberg, Ph.D.

Jonas Hentati-Sundberg, Ph.D.

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Jonas Hentati-Sundberg

Seabird ecologist interested in new methods for studying seabirds in the field, including sailing drones, automated sensor system and Artificial Intelligence.

Sites: Stora Karlsö

We have studied the murres in the Baltic Sea for several decades, without having any detailed insight on the availability of their prey. The only thing we have seen is the fish they bring back to the ledge for feeding their chicks. In 2019, everything changed, when started using a “marine drone” with an echosounder to survey the waters around the colony. We are now developing detailed ideas on the distribution of fish, at which depth they are present, and how they behave. By linking this to the foraging behaviour of the birds, we can get a more precise idea on how much fish we need to leave in the water to conserve seabird populations.

Tony Diamond, M.Sc., Ph.D.

University of New Brunswick, Fredericton

Tony Diamond, M.Sc., Ph.D.

Emeritus Professor, University of New Brunswick, Fredericton
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Tony Diamond

I was first exposed to seabird research on Skokholm, by Mike Harris, in 1963. After graduating from university I studied seabirds at Aldabra, Indian Ocean, for my Ph.D. (Aberdeen) and in the Caribbean, before establishing long-term research on Machias Seal Island, Bay of Fundy, in 1995. Our focus is on population and feeding ecology of the whole seabird community of alcids (3 species), terns (2 species), storm-petrels and eiders, in relation to oceanographic change. I now serve as advisor to Heather Major who is continuing the Machias Seal project at the Avian Laboratory for Avian Research at the University of New Brunswick.

Sites: Machias Seal

Machias Seal is a 9.5ha rocky island at the junction of the Bay of Fundy and the Gulf of Maine, managed as a Migratory Bird Sanctuary by the Canadian Wildlife Service. It is the largest seabird colony in the Gulf of Maine oceanic ecosystem, hosting colonies of cold-water species close to the southern edge of their distribution. UNB’s research since 1995 has been focused in two directions – exploring how several closely-related species persist in co-existence here, and interpreting changes in the birds’ biology in terms of responses to environmental changes. For several species it functions as the 'mothership' of the broader Gulf of Maine seabird metapopulation.

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View of the Machias Seal bird colony from land with ocean in the background.

Richard Phillips, Ph.D.

British Antarctic Survey

Richard Phillips, Ph.D.

Professor, British Antarctic Survey
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Richard Phillips

Richard is a seabird ecologist at British Antarctic Survey. His research focuses on many aspects of the ecology and conservation of seabirds. He worked on seabirds in Scotland for his PhD and first couple of postdocs, then shifted focus to the southern hemisphere and has led the BAS research on albatrosses, petrels and skuas since the mid 2000s. He works closely with the Agreement on the Conservation of Albatrosses and BirdLife International to help develop strategies to improve knowledge of seabirds, their threats - particularly from fisheries and climate change - and conservation.

Sites: Bird

The first study of albatrosses at Bird Island was in the late 1950s. More species have been added over time, most recently the white-chinned petrel, and British Antarctic Survey now monitor 11 species of seabirds on the island. The data are used to answer diverse questions about ecology, life history and threats, and to help develop policy for management and conservation.

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White chinned petrel soaring with glacier in the background

White-chinned petrel at South Georgia

Erpur Snær Hansen, Ph.D.

Erpur Snær Hansen, Ph.D.

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Erpur Snær Hansen

I am a project leader of Atlantic Puffin population monitoring program in 12 colonies around Iceland since 2010, and project leader of the Icelandic nocturnal seabird monitoring program since 2017.

Every year since 2010, we visit twelve puffin colonies around Iceland twice, to study their population ecology. 'Gone Feral', the YouTube channel has featured many of these sites, including Papey Island, in this video, off the East Coast of Iceland. By clicking on the links, you can view videos of some of our other sites in Iceland, including Akurey, Grímsey, and Vestmannaeyjar islands. 

What It All Means

The goal of the Global Seabird Working Group is to leverage the persistent work of researchers on breeding colonies around the world to help us understand what seabirds can tell us about ocean health. It is increasingly clear that our marine ecosystems are under multiple threats. Celebrating, monitoring, and protecting seabirds can help us understand changes, and what can be done to turn declining trends around.

celebrating

Seabirds are fantastically diverse top predators; whether they “fly” underwater for plankton or skim the surface for small fishes, these amazing creatures are exquisitely adapted to life on the seas. Our interactions with seabirds are often limited to those we can see from the shoreline, but these species connect us to the vast, ever-changing, and increasingly threatened marine environments that they call home.

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Atlantic puffins

Atlantic puffins (Fratercula arctica) on the cliffs of Great Saltee Island in the Celtic Sea.

Credit: Wynand van Poortvliet

monitoring

Long-term scientific research programs around the world, like those led by members of the GSWG, are more important than ever if we are to continue observing seabirds to understand oceans. As seabird populations struggle with ocean warming and other human activities, these programs can help society protect these threatened populations for future generations.

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Researcher looking through binoculars on Alcatraz Island

Maggie Lee Post, seabird researcher at the Farallon Institute monitoring breeding colonies on Alcatraz Island, California, USA.

protecting

Ecological research provides valuable insights that can shape local, regional, and global policy. Our work shows that seabird productivity is declining globally, particularly in the Northern Hemisphere. Strong, targeted management of prey species, such as small forage fish, may help to minimize the effects of ocean warming on top predators.

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Fishing boat lifting nets out of water full of fish.

Fisheries provide jobs, revenue, and are the primary source of protein to more than 35 percent of the world’s population. Regions where the greatest amount of ecosystem overfishing occurs are also where impacts can be the greatest.

Credit: NOAA Fisheries

study questions food for thought

Test your knowledge with the questions below. Interested in building a lesson plan around this work? Email info@faralloninstitute.org for suggestions and to share your ideas.

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Puffin (Fratercula arctica) with beak full of sandeels.

Puffin (Fratercula arctica) with beak full of sandeels. 

Credit: CreativeNature_nl

Ocean Warming and the Food Web

  1. Spin the globe in the Impacts of Ocean Warming Temperatures section, which parts of the oceans are warming, and which are cooling?
  2. What causes ocean stratification and what breaks down stratification?
  3. How might ocean warming and stratification influence the availability of prey for top predators like seabirds? 

Seabird Variety and Habitat

  1. What are some of the ways seabirds forage for their prey? What do they eat? 
  2. Seabirds mate and lay eggs in colonies on the coastline and remote islands. Why do they choose these places to nest?
  3. Play around in the Seabird Species section. Which is your favorite seabird and why?

Observation and Breeding Success

  1. What aspects of seabirds do researchers try to measure on breeding colonies?
  2. Some of the longest breeding success time series go back 50+ years! What makes these datasets so important?
  3. Play around in the Observation Sites section. Which breeding colony would you most like to visit and why?

Data Modeling and Analysis

  1. New research shows that seabird breeding success is in decline? Where is it declining fastest and among which types of seabirds?
  2. How is the probability of breeding failure changing, and what does this mean for seabirds?
  3. What are two things we can do to address climate-driven declines among top predators, like seabirds?

news and updates

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