Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2025

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 10501 - 10530 of 31592

Full-Text Articles in Entire DC Network

Rapid Increase In Size Of Wedge-Tailed Shearwater Ardenna Pacifica Colony Following Rat Eradication, Danielle Z. Keys, Robert W. Bullock, Clare Keating, Pierre A. Pistorius Jul 2025

Rapid Increase In Size Of Wedge-Tailed Shearwater Ardenna Pacifica Colony Following Rat Eradication, Danielle Z. Keys, Robert W. Bullock, Clare Keating, Pierre A. Pistorius

Marine Ornithology

Invasive mammalian predators have devastating effects on seabird nesting colonies. A census was conducted on breeding Wedge-tailed Shearwaters Ardenna pacifica in 2016 and 2021 on D’Arros Island, Seychelles, which has been rat-free since 2003. Results were compared with an earlier population estimate to assess population growth following the rat eradication. Compared to counts in 2009, we estimated a 10-fold increase in breeding population size, with 2768 (95% confidence interval (CI) 2424–3112) and 2406 (95% CI 2143–2667) breeding pairs in 2016 and 2021, respectively. While the estimated increase is partly attributable to differences in the timing of the conducted census between …

Go to article

Establishment Of An Incipient Newell’S Shearwater Puffinus Newelli Colony On Maui, Gregory Spencer, Mitchell Craig, Brad Yuen, David Ainley Jul 2025

Establishment Of An Incipient Newell’S Shearwater Puffinus Newelli Colony On Maui, Gregory Spencer, Mitchell Craig, Brad Yuen, David Ainley

Marine Ornithology

We report the development of a colony of threatened Newell’s Shearwater Puffinus newelli (NESH) at Makamaka‘ole, West Maui, USA, a successful first undertaking in the Hawaiian Islands. Efforts involved the construction of two predator-proof fenced areas, removal/control of predators, placement of nest boxes, and social attraction using recorded calls and decoys. Initially, one of the management areas was intended for Hawaiian Petrel Pterodroma sandwichensis (HAPE) and the other for NESH. Exclosures were completed and mammalian predators were removed in 2013, and social attraction began in 2014. Both species almost immediately began flyovers to inspect speakers and by 2015, they had …

Go to article

A 31-Year Time Series Of At-Sea Counts Shows A Non-Significant Decline Of Marbled Murrelets At Laskeek Bay, Haida Gwaii, 1990–2020, Vivian Pattison, Douglas F. Bertram, Sonya A. Pastran, Anthony J. Gaston, Rian D. Dickson, Mark C. Drever Jul 2025

A 31-Year Time Series Of At-Sea Counts Shows A Non-Significant Decline Of Marbled Murrelets At Laskeek Bay, Haida Gwaii, 1990–2020, Vivian Pattison, Douglas F. Bertram, Sonya A. Pastran, Anthony J. Gaston, Rian D. Dickson, Mark C. Drever

Marine Ornithology

The Marbled Murrelet Brachyramphus marmoratus breeds and overwinters along the coast of British Columbia, Canada, and is listed as Threatened under the Canadian Species at Risk Act. Understanding population trends for this seabird species is important for management and recovery, yet long-term time-series data for Marbled Murrelet abundance are rare. We update trends and annual fluctuations of Marbled Murrelet numbers derived from at-sea counts in Laskeek Bay, Haida Gwaii, on the north coast of British Columbia, 1990–2020. We found a non-significant negative trend (−1.55% per year). Counts varied seasonally and peaked in early June; counts also varied with distance from …

Go to article

Predator Disturbance Contributed To Common Murre Uria Aalge Breeding Failures In Cook Inlet, Alaska Following The 2014–2016 Pacific Marine Heatwave, Caitlin E. Marsteller, Mayumi L. Arimitsu, Sarah K. Schoen, Samuel B. Stark, John F. Piatt Jul 2025

Predator Disturbance Contributed To Common Murre Uria Aalge Breeding Failures In Cook Inlet, Alaska Following The 2014–2016 Pacific Marine Heatwave, Caitlin E. Marsteller, Mayumi L. Arimitsu, Sarah K. Schoen, Samuel B. Stark, John F. Piatt

Marine Ornithology

The 2014–2016 Pacific marine heatwave caused unprecedented die-offs and multi-year reproductive failures for Common Murres Uria aalge along the west coast of North America. Lingering impacts, such as declines in colony attendance and productivity, have persisted at some colonies following the heatwave and are attributed largely to changes in prey availability and quality. Here, we present evidence of an additional, top-down mechanism contributing to Common Murre breeding failures on Gull Island (Alaska): disturbance of nesting birds by aerial predators and associated egg depredation. We collected time-lapse images over five murre breeding seasons (2016–2020) on Gull Island to document the frequency, …

Go to article

Highly Pathogenic Avian Influenza Resulted In Unprecedented Reproductive Failure And Movement Nehaviour By Northern Gannets, Noah G. Careen, Sydney M. Collins, Kyle J. N. D’Entremont, Jordan Wight, Ishraq Rahman, Kathryn E. Hargan, Andrew S. Lang, William A. Montevecchi Jul 2025

Highly Pathogenic Avian Influenza Resulted In Unprecedented Reproductive Failure And Movement Nehaviour By Northern Gannets, Noah G. Careen, Sydney M. Collins, Kyle J. N. D’Entremont, Jordan Wight, Ishraq Rahman, Kathryn E. Hargan, Andrew S. Lang, William A. Montevecchi

Marine Ornithology

In 2022, highly pathogenic avian influenza (HPAI) virus resulted in mass mortality throughout seabird colonies in the North Atlantic Ocean. While mortalities and transmission of the virus are being documented, other effects are less understood. We documented nest abandonment and unprecedented reproductive failure by Northern Gannets Morus bassanus at Cape St. Mary’s, Newfoundland and Labrador, Canada, the species’ southernmost colony. Reproductive success in 2022 was the lowest on record at 17%, which was likely a result of adults abandoning the nest and succumbing to avian influenza virus (AIV) infection. Following the AIV outbreak at Cape St. Mary’s, we also documented …

Go to article

Melanistic Razorbill Alca Torda At Machias Seal Island, New Brunswick, Canada, Heather L. Major, Tabatha L. Cormier, Antony W. Diamond Jul 2025

Melanistic Razorbill Alca Torda At Machias Seal Island, New Brunswick, Canada, Heather L. Major, Tabatha L. Cormier, Antony W. Diamond

Marine Ornithology

Aberrant colouration in birds is relatively common but melanism occurs infrequently. We report an observation of a melanistic Razorbill Alca torda attending the nesting colony at Machias Seal Island, Bay of Fundy in 2022 and 2023. This is the third reported occurrence of a melanistic Razorbill and the first in over 100 years.

Go to article

Finding Colonies Of Black-Headed Gulls Chroicocephalus Ridibundus Using Google Earth, Roberto G. Valle, Alejandro Corregidor-Castro, Francesco Scarton Jul 2025

Finding Colonies Of Black-Headed Gulls Chroicocephalus Ridibundus Using Google Earth, Roberto G. Valle, Alejandro Corregidor-Castro, Francesco Scarton

Marine Ornithology

We explore the possibility of identifying Black-headed Gull Chroicocephalus ridibundus colonies in the saltmarshes of the Lagoon of Venice, Italy, using Google Earth satellite images. One reproductive season was considered (June 2017), based on the images available on Google Earth. This species builds nests clustered around tidal pools and tidal creeks, providing a dark background to reveal the white gulls. Images of the southern part of the lagoon (excluding fish farms) were analyzed by dividing it into sectors (n = 403) using the Google Earth grid at an elevation of 100 m above ground level. The results of the satellite …

Go to article

Notes On A Plover Briefly Incubating An Oystercatcher Nest In Patagonia, José O. Valdebenito Jul 2025

Notes On A Plover Briefly Incubating An Oystercatcher Nest In Patagonia, José O. Valdebenito

Marine Ornithology

A breeding female Two-banded Plover Charadrius falklandicus was observed incubating the eggs of a Magellanic Oystercatcher Haematopus leucopodus while the nest was unattended by the oystercatcher. The behaviour was likely triggered by the plover’s nest becoming momentarily inaccessible, and so, being in incubation mode, the bird responded by incubating the nearest nest available. This is the first report of such behaviour while the oystercatcher was nearby, and the plover nest was still active and in sight.

Go to article

Marbled Murrelet Brachyramphus Marmoratus Use Of A Freshwater Lake On Vancouver Island, British Columbia, 2018–2023, Daryl S. Henderson, Spencer G. Sealy Jul 2025

Marbled Murrelet Brachyramphus Marmoratus Use Of A Freshwater Lake On Vancouver Island, British Columbia, 2018–2023, Daryl S. Henderson, Spencer G. Sealy

Marine Ornithology

Marbled Murrelets Brachyramphus marmoratus are small seabirds widely distributed in nearshore waters on the west coast of North America, from Alaska to central California. A 1986 review of anecdotal records revealed that Marbled Murrelets use coastal freshwater lakes during the breeding season, possibly to forage, and in winter, possibly while prospecting for nest sites in old-growth forest. Our weekly surveys and observations on Sproat Lake (central Vancouver Island, British Columbia, Canada) from November 2018 to March 2023, confirmed year round use by murrelets, with absences during the prealternate molt (beginning mid-March) and the prebasic molt (August and September), when the …

Go to article

Breeding Population Size Of The Pink-Footed Shearwater Ardenna Creatopus On Isla Mocha, Chile, Ryan D. Carle, Tiare Varela, Valentina Colodro, T.J. Clark-Wolf, Jonathan Felis, Peter Hodum, Francisco Javier Astete Castillo, Verónica López Jul 2025

Breeding Population Size Of The Pink-Footed Shearwater Ardenna Creatopus On Isla Mocha, Chile, Ryan D. Carle, Tiare Varela, Valentina Colodro, T.J. Clark-Wolf, Jonathan Felis, Peter Hodum, Francisco Javier Astete Castillo, Verónica López

Marine Ornithology

Species population estimates are a fundamental component of conservation planning, but there are deficiencies in reliable data for many seabirds. The Pink-footed Shearwater Ardenna creatopus is a seabird that breeds on three islands worldwide, with the largest population on Isla Mocha, Chile. We aimed to update the breeding population estimate of Pink-footed Shearwaters on Isla Mocha, comparing results from design- and model-based estimation methods. We counted shearwater burrows in 220 randomly generated five-meter-radius plots across pre-defined strata on Isla Mocha. We estimated total number of burrows using area-based extrapolation (design-based method), and separately using a model predicting burrow density based …

Go to article

Status And Occurrence Of Wedge-Tailed Shearwater Ardenna Pacifica In Waters Of The Northwestern Coast Of South America, Manuel Marín Jul 2025

Status And Occurrence Of Wedge-Tailed Shearwater Ardenna Pacifica In Waters Of The Northwestern Coast Of South America, Manuel Marín

Marine Ornithology

This study examines the distribution of Wedge-tailed Shearwater Ardenna pacifica along the northwest coast of South America. The species is well known in tropical waters distant from the coast, but it also appears to be a regular visitor to shelf-break waters off Colombia and northern Ecuador; there is no evidence indicating a similar presence within the exclusive economic zone (EEZ) of Peru, where waters are colder. About 50% of Wedge-tailed Shearwater sightings are associated with dolphins and/or large fish. More than 90% of the nearshore South American records are of pale-phase individuals.

Go to article

Tracked Gulls Help Identify Potential Zones Of Interaction Between Whales And Shipping Traffic, Megan A. Cimino, Heather Welch, Jarrod A. Santora, David Kroodsma, Elliott L. Hazen, Steven J. Bograd, Pete Warzybok, Jaime Jahncke, Scott A. Shaffer Jul 2025

Tracked Gulls Help Identify Potential Zones Of Interaction Between Whales And Shipping Traffic, Megan A. Cimino, Heather Welch, Jarrod A. Santora, David Kroodsma, Elliott L. Hazen, Steven J. Bograd, Pete Warzybok, Jaime Jahncke, Scott A. Shaffer

Marine Ornithology

Seabird-vessel interactions are often studied through the lens of fisheries bycatch, but seabirds encounter many watercraft types. Western Gulls Larus occidentalis breeding on the Farallon Islands (California, USA) have a foraging domain that encompasses both shipping lanes and productive fishing grounds, resulting in ample opportunities for vessel encounters. Previous research showed that these Western Gulls can serve as ecosystem indicators because their foraging behavior is linked to ocean prey conditions, and because their foraging grounds overlap with that of Humpback Whales Megaptera novaeangliae, which can make prey accessible. Because ship strikes and entanglement in fishing gear are concerns for whales …

Go to article

Effects Of A Vagrant Arctic Fox Alopex Lagopus On An Isolated Newfoundland Seabird Community, Raul Zabala Belenguer, Amy C. Wilson, Katja H. Kochvar, Sabina I. Wilhelm, Pierre-Paul Bitton Jul 2025

Effects Of A Vagrant Arctic Fox Alopex Lagopus On An Isolated Newfoundland Seabird Community, Raul Zabala Belenguer, Amy C. Wilson, Katja H. Kochvar, Sabina I. Wilhelm, Pierre-Paul Bitton

Marine Ornithology

We report predation by an Arctic Fox Alopex lagopus on two seabird species, Atlantic Puffins Fratercula arctica and Leach’s Storm Petrels Hydrobates leucorhous, nesting on Bakeapple Island, Little Fogo Islands, Newfoundland, Canada. This event took place in 2022, when a whole-island inspection revealed that fox, facilitated by over-ice invasion, killed at least 139 adult storm petrels and 8 puffin chicks. The fox also dug out 83 storm petrel and 4 puffin burrows. Breeding by seabirds on the island, which harbours some of the northernmost colonies in Newfoundland, was also largely disrupted; we documented extremely low egg and chick production values …

Go to article

Intra-Annual Shifts In Atlantic Puffin Fratercula Arctica Depredation And Kleptoparasitism By Larus Gulls At A Multi-Species Seabird Colony, Gibson M. Rieger, Gail K. Davoren Jul 2025

Intra-Annual Shifts In Atlantic Puffin Fratercula Arctica Depredation And Kleptoparasitism By Larus Gulls At A Multi-Species Seabird Colony, Gibson M. Rieger, Gail K. Davoren

Marine Ornithology

Great Black-backed Gulls Larus marinus and American Herring Gulls L. argentatus smithsonianus are considered dietary generalists at the population level: they consume a variety of prey types, including the adults and offspring of other seabirds, and they shift among prey types as availability varies. Atlantic Puffin Fratercula arctica adults, eggs, and chicks are often the target of depredation, and adults are also susceptible to kleptoparasitic attacks by large gulls during their summer breeding season in coastal Newfoundland, Canada. We investigated the depredation and kleptoparasitism of puffins by large gulls during July–August 2021/22 at a multi-species breeding colony on the northeast …

Go to article

Fish Prey Of The Peruvian Tern Sternula Lorata Along The Northern Coast Of Chile, Yerko A. Vilina, Luis Pastenes, Beatriz Munizaga, Frederick Toro, Álvaro Neira-Soto, Blanca E. Molina-Burgos Jul 2025

Fish Prey Of The Peruvian Tern Sternula Lorata Along The Northern Coast Of Chile, Yerko A. Vilina, Luis Pastenes, Beatriz Munizaga, Frederick Toro, Álvaro Neira-Soto, Blanca E. Molina-Burgos

Marine Ornithology

Scarce information is available on the trophic ecology and feeding habitats of the Peruvian Tern Sternula lorata. We searched 15 Peruvian Tern colonies along the coast of northern Chile during the breeding seasons of 2008 to 2018 to evaluate the tern’s main food source. We collected samples of prey remains found near nests as well as prey items regurgitated by chicks and adults during our visits. We found that the Peruvian Tern is mainly piscivorous, secondarily feeding on some cephalopods and euphausiids. Pacific Saury Scomberesox saurus and Paloma Pompano Trachinotus paitensis were the main prey found near nests, but regurgitated …

Go to article

Ecological Experiences And Perceptions Of Small-Scale Gillnet And Purse Seine Fishers On Seabirds And Other Non-Target Taxa In The Humboldt Current System, Chile, Cristián G. Suazo, Cristóbal Anguita, Jaime Ojeda, Guillermo Luna-Jorquera, Maritza Sepúlveda, Oliver Yates Jul 2025

Ecological Experiences And Perceptions Of Small-Scale Gillnet And Purse Seine Fishers On Seabirds And Other Non-Target Taxa In The Humboldt Current System, Chile, Cristián G. Suazo, Cristóbal Anguita, Jaime Ojeda, Guillermo Luna-Jorquera, Maritza Sepúlveda, Oliver Yates

Marine Ornithology

Strategies to reduce the negative impacts of fisheries on ecosystems often come into conflict with fishers who have different experiences with, and perceptions of, biodiversity compared to policy makers and fisheries managers. We interviewed 800 fishers along 2400 kilometers of the Humboldt Current System (HCS) coast, assessing fishers’ perceptions of the impacts of marine predators on fishing and their proposals to reduce conflicts with small-scale net fisheries. Vessel captains saw seabirds as positive indicators of fish presence along the HCS (mean probability 62.7%). In contrast, sea lions were perceived negatively, affecting catches for all fishers and causing fishing gear damage …

Go to article

Insights Into The Ecology And Conservation Of Coastal Brazil Seabirds Based On Band Returns, Henrique Chupil, Rosane Fernanda Farah, Andrea Maranho, Carla Beatriz Barbosa, Simone Leonardi, Juarez Cabral, Jenyffer Vierheller Vieira, Liana Rosa, Rodrigo Del Rio Do Valle Jul 2025

Insights Into The Ecology And Conservation Of Coastal Brazil Seabirds Based On Band Returns, Henrique Chupil, Rosane Fernanda Farah, Andrea Maranho, Carla Beatriz Barbosa, Simone Leonardi, Juarez Cabral, Jenyffer Vierheller Vieira, Liana Rosa, Rodrigo Del Rio Do Valle

Marine Ornithology

Banding is the main method used to mark and identify individual birds, and to study populations, migration, age, and behavior. Banding birds also plays an important role in rehabilitation efforts, as their recapture provides good information about the effectiveness of the prescribed treatment, allowing constant review of the rehabilitation protocols used. This study compiles information on banded birds retrieved at the Santos Basin Beach Monitoring Project (Projeto de Monitoramento de Praias da Bacia de Santos, PMP-BS), and it reviews the ecological and behavioral aspects involved in species’ movements that contributed to their arrival at the beach. We also provide results …

Go to article

Autumn Marine Bird Populations In Queen Charlotte Strait And Adjacent Waters: A Candidate For Iba/Kba Status, Anthony J. Gaston, Mark Maftei, Sonya A. Pastran Jul 2025

Autumn Marine Bird Populations In Queen Charlotte Strait And Adjacent Waters: A Candidate For Iba/Kba Status, Anthony J. Gaston, Mark Maftei, Sonya A. Pastran

Marine Ornithology

Systematic transect surveys of marine birds in eastern Queen Charlotte Strait and the western part of Johnstone Strait, British Columbia, Canada, were made between mid-August and mid-October 2020–2022. All birds within 100-m transect strips were counted and numbers corrected for detectability. Extrapolating within five regions of differing ecological characteristics and seabird densities, our results indicate that the study area supported 1% or more of the North American populations of Pigeon Guillemot Cepphus columba, Marbled Murrelet Brachyramphus marmoratus, California Gull Larus californicus, Glaucous-winged Gull L. glaucescens, Iceland Gull L. glaucoides, and Short-billed Gull L. brachyrhynchos. Our estimation of gull species in …

Go to article

Masthead, Pacific Seabird Group Jul 2025

Masthead, Pacific Seabird Group

Marine Ornithology

No abstract provided.

Go to article

Inside Front Cover, Pacific Seabird Group Jul 2025

Inside Front Cover, Pacific Seabird Group

Marine Ornithology

No abstract provided.

Go to article

Contents, Pacific Seabird Group Jul 2025

Contents, Pacific Seabird Group

Marine Ornithology

No abstract provided.

Go to article

Author Instructions, Pacific Seabird Group Jul 2025

Author Instructions, Pacific Seabird Group

Marine Ornithology

No abstract provided.

Go to article

A Systematic Review Of Trends In Research On Seabird Behavioral Flexibility, M. Candelaria Biagiotti Barchiesi, Laura M. Biondi, German O. García Jul 2025

A Systematic Review Of Trends In Research On Seabird Behavioral Flexibility, M. Candelaria Biagiotti Barchiesi, Laura M. Biondi, German O. García

Marine Ornithology

There has been an increase in interest in the study of behavioral flexibility for its role in how organisms face disturbances and changes in their environment. However, there is not much research on this topic for seabirds, whose conservation status is affected by multiple issues related to changes in their environment. The goal of this paper was to analyze research on seabird behavioral flexibility and to identify knowledge gaps. A systematic review was conducted using academic search engines that included articles published from 1986 to 2022. In the 143 articles that were analyzed, the following were identified: publication date, family …

Go to article

Diet Assessment And Vulnerability Of White-Faced Storm Petrel Pelagodroma Marina Within A Warming Hotspot, Madhuli Karmalkar, Lauren Roman, Farzana Kastury, Fernando Arce, Kerrie M. Swadling Jul 2025

Diet Assessment And Vulnerability Of White-Faced Storm Petrel Pelagodroma Marina Within A Warming Hotspot, Madhuli Karmalkar, Lauren Roman, Farzana Kastury, Fernando Arce, Kerrie M. Swadling

Marine Ornithology

Shifts in zooplankton communities due to changing ocean climate can affect foraging patterns among planktivorous seabirds. To better understand seabird response to environmental change in Bass Strait, southeast Australia, we investigated the prey species and 16 elements in prey and feathers of the planktivorous White-faced Storm Petrel Pelagodroma marina. The krill Nyctiphanes australis was the most abundant prey species, followed by several species of post-larval fish; otherwise, the species appeared to be a generalist feeder. Element concentrations of feathers were not significantly influenced by dietary composition. Likewise, element concentrations did not significantly differ between major prey species, confirming that the …

Go to article

Best Practices For Using Drones In Seabird Monitoring And Research, Alice J. Edney, Tom Hart, Mark J. Jessopp, Alex Banks, Lucy E. Clarke, Laure Cugnière, Kyle H. Elliot, Ignacio Juarez Martinez, Alexandra Kilcoyne, Matthew Murphy, Ruedi G. Nager, Norman Ratcliffe, Danielle L. Thompson, Robin M. Ward, Matt J. Wood Jul 2025

Best Practices For Using Drones In Seabird Monitoring And Research, Alice J. Edney, Tom Hart, Mark J. Jessopp, Alex Banks, Lucy E. Clarke, Laure Cugnière, Kyle H. Elliot, Ignacio Juarez Martinez, Alexandra Kilcoyne, Matthew Murphy, Ruedi G. Nager, Norman Ratcliffe, Danielle L. Thompson, Robin M. Ward, Matt J. Wood

Marine Ornithology

Over the past decade, drones have become increasingly popular in environmental biology and have been used to study wildlife on all continents. Drones have become of global importance for surveying breeding seabirds by providing opportunities to transform monitoring techniques and allow new research on some of the most threatened birds. However, such fast-changing and increasingly available technology presents challenges to regulators responding to requests to carry out surveys and to researchers ensuring their work follows best practices and meets legal and ethical standards. Following a workshop convened at the 14th International Seabird Group Conference and a subsequent literature search, we …

Go to article

Parental Infanticide By Egg Destruction In Red-Billed Tropicbirds Phaethon Aethereus On The Caribbean Island Of Sint Eustatius, Hailley Danielson-Owczynsky, Hannah Madden, Patrick G.R. Jodice Jul 2025

Parental Infanticide By Egg Destruction In Red-Billed Tropicbirds Phaethon Aethereus On The Caribbean Island Of Sint Eustatius, Hailley Danielson-Owczynsky, Hannah Madden, Patrick G.R. Jodice

Marine Ornithology

Avian reproduction is a process that requires extensive energetic input by parents, particularly in pelagic seabirds. Parental infanticide has rarely been reported in pelagic seabirds, and its frequency among taxa is therefore difficult to determine. Using data from remote cameras, two cases of probable parental infanticide in Red-billed Tropicbirds Phaethon aethereus were captured on Sint Eustatius in the 2021–2022 breeding season. Both cases are presented with images collected from remote cameras as evidence. While appearing counterproductive, parental infanticide may provide an alternative reproduction strategy that favors lifetime reproductive success over short term success.

Go to article

A Modest Proposal-Seabirds Are Marine Creatures First, Land-Based Marine Predators Second, David Ainley, Michael Johns Jul 2025

A Modest Proposal-Seabirds Are Marine Creatures First, Land-Based Marine Predators Second, David Ainley, Michael Johns

Marine Ornithology

Evidence indicates that members of the marine bird research and management communities should view seabirds from the seabirds’ perspective, as marine organisms, rather than the pervading view derived from human’s interaction with the sea, i.e., as temporary visitors centered on home ports. By doing so, research results and management plans will be more realistic and effective. Seabirds themselves only temporarily visit land in their reproductive attempts, with most of their time otherwise spent at sea, as much as 90% in the lifetimes of some species. This is especially true among seabirds of the more productive stretches of water, such as …

Go to article

First Record Of Long-Tailed Skua Stercorarius Longicaudus In Terre Adélie (140°1'E–66°40'S), Agnès Lewden, Servane Kiss, Téo Barracho, Christophe Barbraud Jul 2025

First Record Of Long-Tailed Skua Stercorarius Longicaudus In Terre Adélie (140°1'E–66°40'S), Agnès Lewden, Servane Kiss, Téo Barracho, Christophe Barbraud

Marine Ornithology

On 17 January 2023, a Long-tailed Skua Stercorarius longicaudus was observed and photographed along the coast of Terre Adélie (67–90°S, 136–142°E). This is the first observation of this species at this locality since seabird monitoring began in 1952, and it is only the second report of this species at latitudes this far south.

Go to article

Long-Term Dynamics Of Seabird Species Composition Across The Drake Passage, Ihor V. Dykyy, Olexander O. Salganskiy, Anatolii P. Chernov, Vladlen M. Trokhymets Jul 2025

Long-Term Dynamics Of Seabird Species Composition Across The Drake Passage, Ihor V. Dykyy, Olexander O. Salganskiy, Anatolii P. Chernov, Vladlen M. Trokhymets

Marine Ornithology

We present standardized, quantitative information on the avifauna of the Drake Passage obtained during six crossings between Patagonia and the South Shetland Islands during the summer–autumn period, 1998–2020. We compare inter-annual and seasonal patterns of species occurrence, adding to previous, published surveys, and we discuss species association with the different zones and water masses of the region.

Go to article

Estimating The Impact Of Marine Threats To Seabird Recovery After Predator Eradication, Stephanie B. Borrelle, Holly P. Jones, Yvan Richard, Roberto Salguero-Gómez Jul 2025

Estimating The Impact Of Marine Threats To Seabird Recovery After Predator Eradication, Stephanie B. Borrelle, Holly P. Jones, Yvan Richard, Roberto Salguero-Gómez

Marine Ornithology

Pelagic seabirds are one of the most threatened taxa due to sustained and intensifying threats at their breeding sites on land and when foraging at sea. Predator eradication at seabird breeding sites has become a key strategy for the long-term conservation and viability of seabird populations. However, the extent to which increasing marine threats (i.e., those causing excess mortality such as fisheries bycatch, plastic ingestion, climate change/prey depletion) impact recovery remains poorly understood. We used computer simulations to model demographic data obtained from a review of existing databases to explore the impact of direct marine threats to seabird recovery following …

Go to article

First Prev Next Last