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Articles 1261 - 1290 of 147326
Full-Text Articles in Entire DC Network
Contents, Pacific Seabird Group
Masthead, Pacific Seabird Group
Inside Front Cover, Pacific Seabird Group
Front Cover, Pacific Seabird Group
Author Instructions, Pacific Seabird Group
Reviews: How Birds Evolve: What Science Reveals About Their Origin, Lives And Diversity (Futuyma, Douglas J.); Seabirds: The New Identification Guide (Harrison, P., Perrow, M. & Larsson, H.); The Puffin Plan: Restoring Seabirds To Egg Rock And Beyond (Kress, S.W., Jackson, D.Z.); The Future We Choose: Surviving The Climate Crisis (Figueres, C. & Rivett-Carnac., T.), Anthony J. Gaston, Ian L. Jones, Holly P. Jones, Adalie A. Keltner, Christy N. Wails, George Divoky, Rachel T. Buxton
Reviews: How Birds Evolve: What Science Reveals About Their Origin, Lives And Diversity (Futuyma, Douglas J.); Seabirds: The New Identification Guide (Harrison, P., Perrow, M. & Larsson, H.); The Puffin Plan: Restoring Seabirds To Egg Rock And Beyond (Kress, S.W., Jackson, D.Z.); The Future We Choose: Surviving The Climate Crisis (Figueres, C. & Rivett-Carnac., T.), Anthony J. Gaston, Ian L. Jones, Holly P. Jones, Adalie A. Keltner, Christy N. Wails, George Divoky, Rachel T. Buxton
Marine Ornithology
No abstract provided.
Salvin's Albatross Thalassarche Salvini Interacting With Freezer Trawlers In Waters Of The Patagonian Shelf, Rubén F. Dellacasa, Leandro N. Chavez, Leandro L. Tamini
Salvin's Albatross Thalassarche Salvini Interacting With Freezer Trawlers In Waters Of The Patagonian Shelf, Rubén F. Dellacasa, Leandro N. Chavez, Leandro L. Tamini
Marine Ornithology
We present a new record of Salvin’s Albatross Thalassarche salvini in waters of the Patagonian continental shelf. During a seabird census on 06 December 2019, a sub-adult individual within a mixed-species flock was observed eating fishery discards. In addition, we review sightings of this species outside its known core range using published records and other information. The species’ presence in Argentine waters has possibly been underestimated and further work to elaborate its interaction with fishery fleets is required.
Editorial: 50 Volumes Of Marine Ornithology, 1976-2022: The Founding Editor Looks Back, John Cooper
Editorial: 50 Volumes Of Marine Ornithology, 1976-2022: The Founding Editor Looks Back, John Cooper
Marine Ornithology
No abstract provided.
First Record Of The Red-Footed Booby Sula Sula For Iran, Ali Khani, Faezeh Fatemizadeh
First Record Of The Red-Footed Booby Sula Sula For Iran, Ali Khani, Faezeh Fatemizadeh
Marine Ornithology
The Red-footed Booby Sula sula, a pelagic seabird of the family Sulidae, is widespread in the tropical Atlantic, Indian, and Pacific oceans. Here, we present details and photographs of the first well-documented record of the species for Iran, on the coast of the Persian Gulf, northern Indian Ocean.
Composition Of The Seabird Community Off French Guiana, Claire Pusineri, Ludivine Martinez, Benjamin De Montgolfier, Dinis Geraldes, Paul Lenrume, Amandine Bordin, Morjane Safi, Alessandra Suardi, Virginie Wyss, Brendan Leclerc, Vincent Rufray
Composition Of The Seabird Community Off French Guiana, Claire Pusineri, Ludivine Martinez, Benjamin De Montgolfier, Dinis Geraldes, Paul Lenrume, Amandine Bordin, Morjane Safi, Alessandra Suardi, Virginie Wyss, Brendan Leclerc, Vincent Rufray
Marine Ornithology
We provide information on the seabirds occurring year-round in waters of the French Guiana Exclusive Economic Zone, based on data obtained from three boat-based campaigns: a campaign by the Groupe d’Étude et de Protection des Oiseaux de Guyane was conducted for four days every two months from July 2011 to June 2012; a campaign by Cohabys was performed for five days per month from January to May 2018; and a campaign by Ocean Science & Logistic consisted of four 10-day surveys conducted in June, July, September, and October 2018. Overall, 30 seabird species within 1110 groups of birds were sighted …
Movements And Asynchronous Nesting Of The Peruvian Tern Sternula Lorata In Chile And Peru, Thomas P. Ryan, Bárbara Olmedo Barrera, Sylvia Hernández Aquez, Michael T. Hallworth
Movements And Asynchronous Nesting Of The Peruvian Tern Sternula Lorata In Chile And Peru, Thomas P. Ryan, Bárbara Olmedo Barrera, Sylvia Hernández Aquez, Michael T. Hallworth
Marine Ornithology
The Peruvian Tern Sternula lorata is an endangered seabird that nests asynchronously in different parts of its nesting range from northern Chile to Ecuador. Asynchronous nesting raises the possibility of counting individuals more than once during annual population censuses. We deployed 10 light-level archival tags (geolocators) to terns at the nesting ground in Mejillones, Chile, at the southern end of this species’ range during 06–11 September 2015, and we retrieved three the following year at the same location. Results showed that the tagged birds remained at the nesting grounds in Mejillones from July to December then migrated north, some in …
Seabird Abundance And Distribution Off Western Iberian Waters Estimated Through Aerial Surveys, Hélder Araújo, Pedro Correia-Rodrigues, Jorge Bastos-Santos, Marisa Ferreira, Andreia T. Pereira, Jose Martinez-Cedeira, José Vingada, Catarina Eira
Seabird Abundance And Distribution Off Western Iberian Waters Estimated Through Aerial Surveys, Hélder Araújo, Pedro Correia-Rodrigues, Jorge Bastos-Santos, Marisa Ferreira, Andreia T. Pereira, Jose Martinez-Cedeira, José Vingada, Catarina Eira
Marine Ornithology
Western Iberian waters are important migratory flyways, stopover sites, and wintering areas for several of the world’s seabird species. To describe seabird species composition, distribution, and abundance in these waters, we performed six aerial surveys in September and/ or October of each year, 2010–2015, covering 74 840 km2. Using line-transect methodology, 27 396 seabird sightings from 17 taxonomic groups were recorded along 10496.3 nautical miles (19 433 km). Using the program “Distance,” annual and overall abundance estimates were obtained for nine taxonomic groups: Balearic Shearwater Puffinus mauretanicus, Great Shearwater Ardenna gravis, Cory’s Shearwater Calonectris borealis, shearwaters, Northern Gannet Morus bassanus, …
The Tropicbirds Phaethon Spp. Of The Islas Desventuradas Archipelago, Chile, Manuel Marín, Rodrigo González
The Tropicbirds Phaethon Spp. Of The Islas Desventuradas Archipelago, Chile, Manuel Marín, Rodrigo González
Marine Ornithology
We found nesting Red-billed and Red-tailed tropicbirds Phaethon aethereus and P. rubricauda in the Islas Desventuradas archipelago, Chile. We visited Islote González on 14–15 December 2020 and on 23 August 2021. During the December visit, we encountered a colony of Red-billed Tropicbirds totaling a minimum of 62 breeding pairs. The nests were in cavities on steep cliffs and slopes located mainly on the northern part of the island, and we were able to access 34, of which 11 had eggs, 11 had nestlings of different ages, and 12 were active but empty. During the August visit, we found four nests …
Albatross And Petrel Interactions With An Artisanal Squid Fishery In Southern Peru During El Niño, 2015-2017, Cristian Moreno, Javier Quiñones
Albatross And Petrel Interactions With An Artisanal Squid Fishery In Southern Peru During El Niño, 2015-2017, Cristian Moreno, Javier Quiñones
Marine Ornithology
We report on the occurrence of albatrosses (Diomedeidae) and petrels (Procellariidae) associated with an artisanal small-scale fishery (SSF) for Humboldt Squid Dosidicus gigas in waters of southern Peru during El Niño 2015–2016 and coastal El Niño 2017. We deployed as observers on a number of fishing trips to assess seabird interactions. White-chinned Petrels Procellaria aequinoctialis and Waved Albatross Phoebastria irroata were the most abundant species observed, followed by Salvin’s Thalassarche salvini and Chatham T. eremita albatross, and Cape Petrels Daption capense. The majority of procellariid species (> 60% of total birds) visited while vessels were positioned over the continental slope. …
Infanticide In Highly Urbanized Colonies Of Black Skimmers Rynchops Niger, Elizabeth A. Forys, Sarah K. Beres, Abigail L. Mckay, Olivia N. Spicer
Infanticide In Highly Urbanized Colonies Of Black Skimmers Rynchops Niger, Elizabeth A. Forys, Sarah K. Beres, Abigail L. Mckay, Olivia N. Spicer
Marine Ornithology
Infanticide, which is the killing of dependent offspring, occurs in many species of colonial seabirds. Most infanticide attempts are made when chicks wander outside their parents’ territories and are more likely to occur when the colony experiences a disturbance or food is limited. Our objective was to determine the rate of infanticide at three Black Skimmer Rynchops niger colonies located on highly urbanized beaches in Pinellas County, Florida, USA. Infanticide occurred 42 times during 3 223 hours of monitoring (0.013 attempts per hour) over four breeding seasons (2018–2021). More than one third of the infanticide attempts occurred after a disturbance, …
Historical Distribution And Current Population Status Of Tufted Puffins Fratercula Cirrhata In Canada's California Current System, Louise K. Blight, Gregory Mcclelland
Historical Distribution And Current Population Status Of Tufted Puffins Fratercula Cirrhata In Canada's California Current System, Louise K. Blight, Gregory Mcclelland
Marine Ornithology
Unpublished accounts indicate that the number of Tufted Puffin Fratercula cirrhata colonies in western Canada has declined in recent decades. However, a lack of recent colony count data makes it impossible to determine current trends. Here we compile published and unpublished information for Tufted Puffins in the Canadian portion of the California Current System (i.e., from the vicinity of the Scott Islands south to the Canada-US border) to update understanding of the species’ status in the region, and to assemble available information in a single source. We found historical records of three additional colonies over those in pre-existing compilations, bringing …
Direct Field Observation Reveals Whiskered Terns Chlidonias Hybrida Preying On Fish Much Larger Than Themselves, Muhammad Iqbal, Deni Mulyana, Pormansyah, Indra Yustian, Arum Setiawan, Hilda Zulkifli
Direct Field Observation Reveals Whiskered Terns Chlidonias Hybrida Preying On Fish Much Larger Than Themselves, Muhammad Iqbal, Deni Mulyana, Pormansyah, Indra Yustian, Arum Setiawan, Hilda Zulkifli
Marine Ornithology
A Whiskered Tern Chlidonias hybrida, consistent with the species’ aggressive nature, was observed to catch and then consume a Great Blue spotted Mudskipper Boleophthalmus pectinirostris in the Nibung River, Banyuasin Peninsula, South Sumatra Province, Indonesia. The fish was ca. 15 cm in length, which was perhaps equal to the tern’s body length and more than double the size of its usual prey. The tern spent over 20 minutes eating the fish. Only direct, field observation would have revealed predation on this fish.
Spatial Effects In Relation To Reproductive Performance Of Common Murres Uria Aalge At A Re-Established Colony, Gerard J. Mcchesney, Julie L. Yee, Michael W. Parker, William M. Perry, Harry R. Carter, Richard T. Golightly, Stephen W. Kress
Spatial Effects In Relation To Reproductive Performance Of Common Murres Uria Aalge At A Re-Established Colony, Gerard J. Mcchesney, Julie L. Yee, Michael W. Parker, William M. Perry, Harry R. Carter, Richard T. Golightly, Stephen W. Kress
Marine Ornithology
A main goal of seabird colony restoration is for the colony to become self-sustaining. To do so, elevated rates must be attained in (1) reproductive success and (2) recruitment by immigrants and birds produced at the colony. Thus, an understanding of the factors affecting reproductive success and recruitment at restoration sites is vital. We examined how spatial features at the colony level affected reproductive success of Common Murres Uria aalge (hereafter, murres) over a six-year period at Devil’s Slide Rock, California, a colony re-established using social attraction techniques. Clusters of sites with similar egg-laying dates, as well as high hatching …
No Evidence Of Avian Malaria In Two Mediterranean Endemic Seabirds, Luca Ilahiane, Federico De Pascalis, Danilo Pisu, David Pala, Federica Ferrario, Marco Cucco, Diego Rubolini, Jacopo G. Cecere, Irene Pellegrino
No Evidence Of Avian Malaria In Two Mediterranean Endemic Seabirds, Luca Ilahiane, Federico De Pascalis, Danilo Pisu, David Pala, Federica Ferrario, Marco Cucco, Diego Rubolini, Jacopo G. Cecere, Irene Pellegrino
Marine Ornithology
In birds, pathogens and diseases—such as avian malaria—can have severe detrimental effects on individual fitness. Pathogen prevalence can vary across species and may differ between populations living in different localities, but screening can aid in our understanding of a disease’s distribution and parasite-host interactions. Although seabirds generally exhibit low avian malaria infection patterns, blood parasites of several species and populations have never been investigated in detail. Using molecular techniques, we screened for blood parasites in two Mediterranean seabirds, the Scopoli’s Shearwater Calonectris diomedea and the Mediterranean Storm Petrel Hydrobates pelagicus melitensis. In addition, we searched for and sampled potential vector …
A Four-Legged African Penguin Spheniscus Demersus Chick, Albert Snyman, David G. Roberts, Katrin Ludynia
A Four-Legged African Penguin Spheniscus Demersus Chick, Albert Snyman, David G. Roberts, Katrin Ludynia
Marine Ornithology
Here we report an African Penguin Spheniscus demersus chick that was removed from Stony Point, South Africa with two supplementary feet; one supplementary foot was located near the cloaca between the left foot and the tail, and the other supplementary foot was situated just behind the left foot.
Albatross Population Monitoring Using Satellite Imagery, A Case Study: Short-Tailed Albatross Phoebastria Albatrus At The Senkaku Islands, Nigel Brothers, Catherine Bone, Alexia Wellbelove
Albatross Population Monitoring Using Satellite Imagery, A Case Study: Short-Tailed Albatross Phoebastria Albatrus At The Senkaku Islands, Nigel Brothers, Catherine Bone, Alexia Wellbelove
Marine Ornithology
Accurate monitoring of vulnerable albatross populations is essential to their conservation. Herein, we explore the prospect of monitoring one particular remote albatross population with a view to promoting accurate worldwide monitoring of vulnerable albatross populations. We used very high-resolution (VHR) satellite images to count nesting Short-tailed Albatrosses Phoebastria albatrus on two islands of the Senkaku group, western North Pacific Ocean, where conventional monitoring has not occurred for 19 years due to a geopolitical territory dispute. Despite count uncertainties across rocky terrain, many birds were clearly discernible using the highest resolution image available of Minami-kojima. The result was a count of …
Winter Colony Attendance By Adult Southern Giant Petrels Macronectes Giganteus: Implications For Rodent Eradications, Peter G. Ryan, Steffen Oppel
Winter Colony Attendance By Adult Southern Giant Petrels Macronectes Giganteus: Implications For Rodent Eradications, Peter G. Ryan, Steffen Oppel
Marine Ornithology
Southern Giant Petrels Macronectes giganteus are partial migrants, but the proportion of adult males and females that visit the colony on Gough Island during winter is poorly defined. A better understanding of winter colony attendance is important to predict the possible impact of non-target mortality during restoration efforts involving poison baiting to eradicate introduced mammals. We repeatedly checked the individual identity of all giant petrels attending the largest breeding colony on Gough Island for rings during April–May 2021. Although the maximum number of individually identifiable ringed adults in a single check was 202, overall, 353 ringed adults were recorded, including …
Masthead, Pacific Seabird Group
Contents, Pacific Seabird Group
Inside Front Cover, Pacific Seabird Group
Front Cover, Pacific Seabird Group
Reviews: Hope Matters: Why Changing The Way We Think Is Critical To Solving The Environmental Crisis (Kelsey, E.); The Gull Next Door: Portrait Of A Misunderstood Bird (Taylor, M.), Rachel T. Buxton, Madeleine Goumas
Reviews: Hope Matters: Why Changing The Way We Think Is Critical To Solving The Environmental Crisis (Kelsey, E.); The Gull Next Door: Portrait Of A Misunderstood Bird (Taylor, M.), Rachel T. Buxton, Madeleine Goumas
Marine Ornithology
No abstract provided.
Author Instructions, Pacific Seabird Group
Sabine's Gulls Xema Sabini Outside Of Their Main Wintering Areas Are Not Necessarily Vagrants, Jonatas H.F. Prado, Gabriel Canani, Pedro V. Castilho, Nicholas W. Daudt
Sabine's Gulls Xema Sabini Outside Of Their Main Wintering Areas Are Not Necessarily Vagrants, Jonatas H.F. Prado, Gabriel Canani, Pedro V. Castilho, Nicholas W. Daudt
Marine Ornithology
We reviewed published and unpublished ‘vagrant’ (herein referred to as ‘unusual’) records of Sabine’s Gull Xema sabini worldwide and discuss these records according to age, marine productivity/fishing grounds, and migration corridors. Of the 151 unusual records, 135 (89%) were in or near areas with high productivity and/or known fishing grounds; 10 out of 14 documented records were young birds in their first or second migration, and the ‘unusual’ areas identified in this study could have been reached through known migration pathways used by other bird species. The fact that the majority of records are associated with productive/fishing zones (and are …
Diagnosis Of Hypothermia In Seabirds From Coastal California, Nancy L. Anderson
Diagnosis Of Hypothermia In Seabirds From Coastal California, Nancy L. Anderson
Marine Ornithology
This study established cloacal temperature (TCl) cut-off values to diagnose hypothermia in near shore seabirds rescued along the coast of California. All birds died when TCl was < 38.2 °C. When Aechmophorus grebes were excluded, 100% died when TCl was < 38.4 °C. Mortality increased 2–3× when TCl was lower than receiver operating curve-determined criteria for diagnosing hypothermia based on attitude: < 38.8 °C for mixed species, < 39.1 °C for Common Murres Uria aalge, and < 38.2 °C for Aechmophorus grebes. Reductions in TCl as small as 1.0 °C had significant physiologic effects.