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Articles 931 - 960 of 62452
Full-Text Articles in Entire DC Network
On-Land Foraging By Leach's Storm Petrels Oceanodroma Leucorhoa Coincides With Anomalous Weather Conditions, Kyle J.N. D’Entremont, Robert J. Blackmore, Sydney M. Collins, Dave Brown, Ian L. Jones, Bruce Mactavish, Sabina I. Wilhelm, William A. Montevecchi
On-Land Foraging By Leach's Storm Petrels Oceanodroma Leucorhoa Coincides With Anomalous Weather Conditions, Kyle J.N. D’Entremont, Robert J. Blackmore, Sydney M. Collins, Dave Brown, Ian L. Jones, Bruce Mactavish, Sabina I. Wilhelm, William A. Montevecchi
Marine Ornithology
We describe the first known documentation of on-land foraging by Leach’s Storm Petrels Oceanodroma leucorhoa, a behaviour that has been documented only once before among members of the family Hydrobatidae. During a rain/windstorm from 15 to 17 July 2020 in eastern Newfoundland, individuals fed on coastally spawning and beach-cast capelin Mallotus villosus. This behaviour occurred in conjunction with a marine heatwave in the species’ foraging range. Examination showed that wrecked birds were emaciated with negligible stomach contents. This finding, combined with the abnormal weather and foraging behaviour, suggests that these birds were in a weakened state preceding stranding in coastal …
Hatching Success Of Common Murres Uria Aalge Is Linked To The Number Of Neighbours And Resource Availability, Amy L. Irvine, Julia E. Gulka, Gail K. Davoren
Hatching Success Of Common Murres Uria Aalge Is Linked To The Number Of Neighbours And Resource Availability, Amy L. Irvine, Julia E. Gulka, Gail K. Davoren
Marine Ornithology
When breeding within densely populated colonies, seabirds benefit from increased offspring protection from predators, but intraspecific competition for resources may outweigh these benefits. We tested whether the number of breeding-site neighbours and days of predator presence influenced the breeding performance of Common Murres Uria aalge at two different-sized colonies off the northeastern Newfoundland coast: Cabot Island (10000 breeding pairs; < 10 km offshore) and Funk Island (500000 breeding pairs; ~60 km offshore). Gulls, the main predators of murre eggs/chicks, inhabit both islands in similar numbers. During July–August 2018, camera traps placed at topographically similar plots on each colony recorded breeding performance metrics (i.e., hatching, fledging, reproductive success), number of breeding-site neighbours, and daily presence of gulls. Hatching success was lower at Funk Island (64.7%) than Cabot Island (96.2%), but nearly all hatched chicks fledged at both colonies. Lower hatching success at Funk Island was due to higher egg abandonment and predation. It was also associated with fewer breeding-site neighbours, including non-brooding mates and non-breeders, along with higher gull presence (96.6% of all gull sightings at both colonies). Fewer neighbours at Funk Island may have resulted from mates and non-breeding murres spending more time at sea due to longer distances to predictable foraging sites and higher conspecific densities relative to Cabot Island. In turn, with fewer breeding-site neighbours at Funk Island, parents appeared less able to defend against or deter gull predation. Although Funk Island has special conservation status, protection of Cabot Island may also be important for the long-term conservation of murres in Newfoundland.
Status And Monitoring Methods Of A Red-Tailed Tropicbird Colony On O'Ahu, Hawai'i, Eric A. Vanderwerf
Status And Monitoring Methods Of A Red-Tailed Tropicbird Colony On O'Ahu, Hawai'i, Eric A. Vanderwerf
Marine Ornithology
The Red-tailed Tropicbird Phaethon rubricauda is a widespread seabird that nests in the tropical Pacific and Indian oceans. Most the global population nests in the predator-free Northwestern Hawaiian Islands. In the southeastern Hawaiian Islands, non-native predators restrict the species to nesting on coastal cliffs and small islets. I monitored 734 Red-tailed Tropicbird nests near Ha¯lona Point on O‘ahu during 2005–2020, controlled non-native predators to protect nests (beginning in 2006), and developed tools to facilitate monitoring of the species in other areas. The colony increased in size in response to predator control, from 18 eggs laid in 2006 to 94 eggs …
Reproductive Ecology Of The Black-Necked Swan Cygnus Melancoryphus In A Marine Wetland Of Southern Chile, Jaime A. Cursach, Jaime R. Rau, Claudio N. Tobar, Jonnathan Vilugrón, Francisco Brañas
Reproductive Ecology Of The Black-Necked Swan Cygnus Melancoryphus In A Marine Wetland Of Southern Chile, Jaime A. Cursach, Jaime R. Rau, Claudio N. Tobar, Jonnathan Vilugrón, Francisco Brañas
Marine Ornithology
The Black-necked Swan Cygnus melancoryphus is an endangered species in Chile. After the Río Cruces ecological disaster in Valdivia in 2004 (due to installation of a new pulp mill), the Black-necked Swans that survived were mostly dispersed to marine wetlands of the large island of Chiloé, passing from continental wetlands to the marine environment. The objectives of this study were to provide the first observations of nesting Black-necked Swans in the marine wetland of Chiloé Island, and to identify factors that may affect the survival of their cygnets. Our study was carried out in Caulín Bay (41°49ʹS; 073°38ʹW), Chiloé Island, …
Distribution Patterns And Population Size Of The Ashy Storm Petrel Oceanodroma Homochroa, R. Glenn Ford, Scott Terrill, Janet Casey, Debi Shearwater, Stephanie R. Schneider, Lisa T. Balance, Linda Terrill, Margot Tollefson, David G. Ainley
Distribution Patterns And Population Size Of The Ashy Storm Petrel Oceanodroma Homochroa, R. Glenn Ford, Scott Terrill, Janet Casey, Debi Shearwater, Stephanie R. Schneider, Lisa T. Balance, Linda Terrill, Margot Tollefson, David G. Ainley
Marine Ornithology
The Ashy Storm Petrel (ASSP) Oceanodroma homochroa population has been surveyed intensively, both at sea within the California Current and on the adjacent breeding grounds. Nevertheless, colony-based estimates of breeding populations have significantly underestimated the species’ abundance, especially in the northern portion of its range compared to the southern portion. The species has been described as abundant in central-northern waters, whereas it is considered rare or uncommon in the southern portion. We analyzed aerial and ship tracks from 1980 to 2017 (~497000 km covering 91267 km2 ), to estimate total ASSP population size and at-sea distribution. Modeling the results of …
Masthead, Pacific Seabird Group
Reviews: The Art Of The Bird: The History Of Ornithological Art Through Forty Artists (Lederer, R.J.); Vanishing Fish: Shifting Baselines And The Future Of Global Fisheries (Pauly, D.); Ta Life On Our Planet: My Witness Statement And A Vision For The Future (Attenborough, D.), Abby Mcbride, Michelle Paleczny, Phillip Taylor
Reviews: The Art Of The Bird: The History Of Ornithological Art Through Forty Artists (Lederer, R.J.); Vanishing Fish: Shifting Baselines And The Future Of Global Fisheries (Pauly, D.); Ta Life On Our Planet: My Witness Statement And A Vision For The Future (Attenborough, D.), Abby Mcbride, Michelle Paleczny, Phillip Taylor
Marine Ornithology
No abstract provided.
Author Instructions, Pacific Seabird Group
Longevity Records For The Brown Booby Sula Leucogaster And Flesh-Footed Shearwater Ardenna Carneipes, Vincent H.S. Yap, Lillian G. Stewart, Silke Stuckenbrock, Andrew L. Fidler, Jennifer L. Lavers
Longevity Records For The Brown Booby Sula Leucogaster And Flesh-Footed Shearwater Ardenna Carneipes, Vincent H.S. Yap, Lillian G. Stewart, Silke Stuckenbrock, Andrew L. Fidler, Jennifer L. Lavers
Marine Ornithology
Longevity records for seabirds are vital to understanding population demography but are often limited due to the relatively short duration of many monitoring programs. Here, we present new longevity records for two seabird species: 32.2 years (Queensland, Australia) for the Brown Booby Sula leucogaster and 33.9 years (New Zealand) for the Flesh-footed Shearwater Ardenna carneipes, alongside existing longevity data. While these new records represent the oldest known birds to date, we suggest that they reflect typical adult lifespans of these species, i.e., 25–30 years, and reinforce the need for ongoing monitoring efforts.
Fishy Tales: Behaviour Of Schooling Fish Escaping From Terns, Kees Hulsman, Gurudeo Anand Tularam
Fishy Tales: Behaviour Of Schooling Fish Escaping From Terns, Kees Hulsman, Gurudeo Anand Tularam
Marine Ornithology
The aim of this study is to develop a better understanding of seabird foraging behaviour and the anti-predator behaviour of their prey. Studies of seabirds’ foraging and prey-capture behaviour, as it relates to the evasive and escape behaviour of schooling fish, are sparse. Our study was carried out at One Tree Reef on the southern end of the Great Barrier Reef, Australia. A school of hardyheads Pranesus capricornensis sheltered in the shallows over the sand flats in front of the research station for 14 non-consecutive days. In that time, Lesser Crested Terns Thalasseus bengalensis were observed for 10 hours from …
Southern Influx Of The Pantropical Bulwer's Petrel Bulweria Bulwerii Into The Tasman Sea, Simon B. Z. Gorta
Southern Influx Of The Pantropical Bulwer's Petrel Bulweria Bulwerii Into The Tasman Sea, Simon B. Z. Gorta
Marine Ornithology
Seabirds exploit marine habitats for resources, responding to many complex environmental signals that ultimately drive their distributions. Occasionally, influxes of seabird species to regions outside their normal range occur and determining the drivers of these patterns can aid in understanding their ecology and their conservation. I documented five birdwatching observations of Bulwer’s Petrel Bulweria bulwerii in the Tasman Sea between 24 January and 08 March 2020, roughly 2000 km south of their core range. Based on demographic, environmental, and anecdotal observations of seabirds, cetaceans, and bait fish, I suggest that the influx was most likely resource-driven, rather than accidental, age-related, …
Nesting Seabirds On The Kaikué-Lagartija Island Nature Sanctuary, Calbuco Archipelago, Southern Chile, Jaime A. Cursach, Jonnathan Vilugron, Jaime R. Rau, Carlos Oyarzun, Marcelo Provoste
Nesting Seabirds On The Kaikué-Lagartija Island Nature Sanctuary, Calbuco Archipelago, Southern Chile, Jaime A. Cursach, Jonnathan Vilugron, Jaime R. Rau, Carlos Oyarzun, Marcelo Provoste
Marine Ornithology
Kaikué-Lagartija Island, one of the few sites in the Calbuco Archipelago (southern Chile) that is still in its natural state, has been declared a Nature Sanctuary. However, little has been published regarding the island’s natural history. Here we describe the assemblage of nesting seabirds on Kaikué-Lagartija Island, including estimates of abundance, during the breeding seasons of 2012/13, 2014/15, and 2015/16 for eight species found nesting. The Magellanic Penguin Spheniscus magellanicus is the most abundant seabird on this island, with a breeding population of around 200 pairs. The number of nesting pairs of Kelp Gull Larus dominicanus increased from 17 to …
Multidecadal Comparison Of Red-Footed Booby Sula Sula Diet At Ulupa'u Crater, O'Ahu, Hawai'i, Sarah E. Donahue, Josh Adams, K. David Hyrenbach
Multidecadal Comparison Of Red-Footed Booby Sula Sula Diet At Ulupa'u Crater, O'Ahu, Hawai'i, Sarah E. Donahue, Josh Adams, K. David Hyrenbach
Marine Ornithology
We describe the diet of Red-footed Boobies Sula sula nesting at Ulupa‘u Crater, O‘ahu, Hawai‘i based on 106 regurgitations collected during 2014 and 2015. We also compare our results to a diet study at this colony five decades earlier. Both studies indicate that flying squid (Ommastrephidae) and flyingfish (Exocoetidae) are important prey for this population while provisioning chicks. In particular, Purpleback Flying Squid Sthenoteuthis oualaniensis occurred in the majority (> 70%) of the recent regurgitation samples, and their size (mantle length < 11 cm) indicates that they were mostly juveniles. Moreover, the size distribution of the squid prey varied by year, indicating inter-annual variability in the phenology of spawning and larval development. This study highlights the reliance of Red-footed Boobies on juveniles of this poorly-studied squid and underscores their value as biological samplers of epipelagic fish and squid within their foraging ranges.
Population Decline And Breeding Distribution Changes Of Magnificent Frigatebirds Fregata Magnificens In Baja California Sur, Gerardo Marrón, Adriana Hernández-Alvarez, Roberto Carmona, Sergio Águila
Population Decline And Breeding Distribution Changes Of Magnificent Frigatebirds Fregata Magnificens In Baja California Sur, Gerardo Marrón, Adriana Hernández-Alvarez, Roberto Carmona, Sergio Águila
Marine Ornithology
The Magnificent Frigatebird Fregata magnificens (MaFr) is a tropical seabird species that is widely distributed along the mid-latitude coasts of the Americas. Historically, its most important breeding location has been Estero Las Tijeras in the Magdalena Lagoon complex (MLC), Baja California Sur, Mexico. Our recent data indicate a severe (~96%) population decline at this location. In 2002–2003, 33535 MaFr were counted in all of the MLC, and historical data (1985–1986) support the maintenance of consistently high numbers of MaFr in this region over time. Yet, MaFr abundance dropped severely—to ~1 200 individuals—in 2015. This low abundance persisted into 2017, when …
Masthead, Pacific Seabird Group
Author Instructions, Pacific Seabird Group
Reviews: Journal Of A Voyage: Federico Craveri And The Gulf Of California In 1856 (Craveri, F.; T. Bowen [Ed.], B. D'Arpa And B. Cavatorta [Translators]); How To Be An Antiracist (Kendi, I.X.); The Skin We're In: A Year Of Black Resistance And Power (Cole, D.); Hawai'i'S White Tern: Manu-O-Ku, An Urban Seabird (Scott, S.), Daniel W. Anderson, Rachel T. Buxton, David Ainley, Louise Blight, Jenna Cragg, Benjamin Saenz, Lindsay Young
Reviews: Journal Of A Voyage: Federico Craveri And The Gulf Of California In 1856 (Craveri, F.; T. Bowen [Ed.], B. D'Arpa And B. Cavatorta [Translators]); How To Be An Antiracist (Kendi, I.X.); The Skin We're In: A Year Of Black Resistance And Power (Cole, D.); Hawai'i'S White Tern: Manu-O-Ku, An Urban Seabird (Scott, S.), Daniel W. Anderson, Rachel T. Buxton, David Ainley, Louise Blight, Jenna Cragg, Benjamin Saenz, Lindsay Young
Marine Ornithology
No abstract provided.
Time-Lapse Imagery Of Peruvian Boobies Sula Variegata Reveals Nest Abandonment Caused By Tick Hyperinfestation, Cristina Burga-Domínguez, Diego D. Gonzales-Delcarpio, Carlos B. Zavalaga
Time-Lapse Imagery Of Peruvian Boobies Sula Variegata Reveals Nest Abandonment Caused By Tick Hyperinfestation, Cristina Burga-Domínguez, Diego D. Gonzales-Delcarpio, Carlos B. Zavalaga
Marine Ornithology
Severe tick infestation in seabird colonies causes discomfort in reproductive adults, offspring mortality, and nest abandonment. This study used time-lapse cameras to examine the relationship between Ornithodoros amblus tick infestation and Peruvian Booby Sula variegata nest abandonment in four locations along the Peruvian coast between August 2016 and November 2018. The percent occurrence of discomfort in nesting birds (preening and standing on the nest) recorded by the cameras was used as an indicator of tick infestation. The tick density inside and outside the abandoned colonies was also evaluated. In five of the six colonies, complete nest abandonment occurred over an …
Nightly Colony Attendance Patterns Of Provisioning Cassin's Auklet Ptychoramphus Aleuticus Are Consistent And Synchronous, Laura Mcfarlane Tranquilla, John L. Ryder, Louise K. Blight, Patrick D. O’Hara, Douglas F. Bertram
Nightly Colony Attendance Patterns Of Provisioning Cassin's Auklet Ptychoramphus Aleuticus Are Consistent And Synchronous, Laura Mcfarlane Tranquilla, John L. Ryder, Louise K. Blight, Patrick D. O’Hara, Douglas F. Bertram
Marine Ornithology
We conducted a multi-year (1999–2001) radio telemetry study to determine patterns of colony attendance among breeding Cassin’s Auklets Ptychoramphus aleuticus during the chick-rearing period on Triangle Island in British Columbia, Canada. A total of 1 625 detections were obtained for 80 individual birds (24–28 birds per year), each detected 20.3 times on average. We found that colony attendance (arrival times, departure times, in-burrow shift duration) and foraging trip duration (i.e., time away from the colony) were remarkably synchronous among individuals and years. On average, birds arrived in a pulse after darkness, with 67% of returns between 23h15 and 00h15 and …
Wedge-Tailed Shearwater Ardenna Pacifica Fallout Patterns Inform Targeted Management, Brooke Friswold, Keith Swindle, David Hyrenbach, Melissa R. Price
Wedge-Tailed Shearwater Ardenna Pacifica Fallout Patterns Inform Targeted Management, Brooke Friswold, Keith Swindle, David Hyrenbach, Melissa R. Price
Marine Ornithology
Seabird fledglings are often attracted to artificial, bright lights, leading to their grounding. This phenomenon is termed “fallout” and is associated with an increased risk of mortality from land-based threats. This study evaluated temporal trends and spatial factors, such as fallout clustering near lights and proximity to colonies, to inform targeted management actions. Standardized surveys were conducted from 2002 to 2010 for Wedge-tailed Shearwater Ardenna pacifica (WTSH) fallout on the island of O‘ahu, Hawai‘i, USA. First, yearly fallout counts along the transect showed a two-year cycle and identified 25 November as the date with the highest fallout across years. Second, …
Population Status Of The Kermadec Petrel (Pterodroma Neglecta Juana) At San Ambrosio Island, Chile, Manuel Marín, Rodrigo González, Sergio Trucco
Population Status Of The Kermadec Petrel (Pterodroma Neglecta Juana) At San Ambrosio Island, Chile, Manuel Marín, Rodrigo González, Sergio Trucco
Marine Ornithology
We visited San Ambrosio Island off northern Chile (26°21′S, 079°47′W) on 10–12 December 2019. We found a large population of Kermadec Petrel Pterodroma neglecta juana that appeared to be healthy. In the area that we could survey, we estimated at least 22686 breeding pairs, which is an underestimate of the entire population as we could not access some steep areas. Introduced mammals, which have since been eradicated, caused a loss of island vegetation that might be a drawback for this population, as shading from the sun appears to be important for nest-site selection. Egg-laying started by early December. We assessed …
Two Unprecedented Auk Wrecks In The Northwest Atlantic In Winter 2012/13, Antony W. Diamond, Douglas B. Mcnair, Julie C. Ellis, Jean-François Rail, Erin S. Whidden, Andrew W. Kratter, Sarah J. Courchesne, Mark A. Pokras, Sabina I. Wilhelm, Stephen W. Kress, Andrew Farnsworth, Marshall J. Iliff, Samuel H. Jennings, Justin D. Brown, Jennifer R. Ballard, Sara H. Schweitzer, Joseph C. Okoniewski, John B. Gallegos, John D. Stanton
Two Unprecedented Auk Wrecks In The Northwest Atlantic In Winter 2012/13, Antony W. Diamond, Douglas B. Mcnair, Julie C. Ellis, Jean-François Rail, Erin S. Whidden, Andrew W. Kratter, Sarah J. Courchesne, Mark A. Pokras, Sabina I. Wilhelm, Stephen W. Kress, Andrew Farnsworth, Marshall J. Iliff, Samuel H. Jennings, Justin D. Brown, Jennifer R. Ballard, Sara H. Schweitzer, Joseph C. Okoniewski, John B. Gallegos, John D. Stanton
Marine Ornithology
An unprecedented irruption of thousands of Razorbills Alca torda into Florida in winter 2012/13 was followed by a “wreck” of Razorbills and Atlantic Puffins Fratercula arctica in outer Cape Cod, Massachusetts, in January–March 2013. We describe these events using citizen-science sources (eBird and beached-bird surveys) and band recoveries, then we discuss them in relation to extreme weather and oceanographic change. We explored effects on likely source populations using census and monitoring data, along with possible contributions from population increases, reduced food supply, and extreme weather. Winter 2012/13 followed a marine heatwave throughout the northwest Atlantic, whose effects included reduced availability …
Records Of White Tern Gygis Alba In Panama And Potential Connections To El Niño Events, Daniel Buitrago-Rosas, Jorge L. Medina, Pedro L. Castillo-Caballero
Records Of White Tern Gygis Alba In Panama And Potential Connections To El Niño Events, Daniel Buitrago-Rosas, Jorge L. Medina, Pedro L. Castillo-Caballero
Marine Ornithology
In Panama, the White Tern Gygis alba is a vagrant seabird that has been reported very rarely. Its first record was in 1983, during a very strong El Niño Southern Oscillation (ENSO) event that generated a massive invasion of unusual seabirds from South America into the Panama Bay. Unlike other vagrant seabirds, the White Tern remained unrecorded again until 2016. This note reports the second, and first confirmed, occurrence of White Tern to Panama, along with separate confirmed sightings in 2019. We briefly review these records and their potential connections to ENSO events.
Masthead, Pacific Seabird Group
A Multidimensional Perspective Of Patterns Of Functioning And Well-Being, Lendi Nicole Joy
A Multidimensional Perspective Of Patterns Of Functioning And Well-Being, Lendi Nicole Joy
USF Tampa Graduate Theses and Dissertations
The Center for Behavioral Health Statistics and Quality estimates that 79.4% of U.S. adults will remain free from mental illness each year, but this does not necessarily mean they will enjoy positive psychological health and well-being. Well-being has been associated with positive outcomes such as greater health, longevity, work productivity, and increased social engagement. Thus, it is important for researchers to understand factors contributing to the development of well-being and optimal functioning. The current study used latent profile analysis to classify individuals based on their levels of well-being at ages 23 to 26 years and explored functioning indexes assessed when …
Reviews: The Quickening: Antarctica, Motherhood, And Cultivating Hope In A Warming World, Rachel T. Buxton, Eric J. Woehler
Reviews: The Quickening: Antarctica, Motherhood, And Cultivating Hope In A Warming World, Rachel T. Buxton, Eric J. Woehler
Marine Ornithology
No abstract provided.
Relative Abundance, Seasonal Occurrence, And Distribution Of Marine Birds In The Northern Gulf Of Mexico, J. Christopher Haney, Pamela E. Michael, Jeffrey S. Gleason, Randy R. Wilson, Yvan G. Satgé, Kathy M. Hixson, Patrick G.R. Jodice
Relative Abundance, Seasonal Occurrence, And Distribution Of Marine Birds In The Northern Gulf Of Mexico, J. Christopher Haney, Pamela E. Michael, Jeffrey S. Gleason, Randy R. Wilson, Yvan G. Satgé, Kathy M. Hixson, Patrick G.R. Jodice
Marine Ornithology
Marine birds in the U.S. Gulf of Mexico have long been poorly studied. Given statutory obligations to protect migratory birds and endangered species, three broad-scale vessel and aerial programs initiated since 2010 have now surveyed the entire northern Gulf. Vessel coverage alone exceeds 700 d and 74,000 km of observer effort using 300-m strip transects. We supplemented these survey data with earlier, smaller-scale studies, eBird checklists, literature reviews, and other less accessible sources to create snapshot summaries of relative abundance, seasonal occurrence, and regional distribution for 117 taxa of marine and water birds reported from the northern Gulf (113 of …
Status Of Craveri’S Murrelet Synthliboramphus Craveri In The Midriff Islands, Gulf Of California, Mexico, Francisco Jaime Martínez Reyes, Lauren A. Dolinski, Lorayne R. Meltzer, Paulina De L. Camarena Gomez, Noah L. Oas
Status Of Craveri’S Murrelet Synthliboramphus Craveri In The Midriff Islands, Gulf Of California, Mexico, Francisco Jaime Martínez Reyes, Lauren A. Dolinski, Lorayne R. Meltzer, Paulina De L. Camarena Gomez, Noah L. Oas
Marine Ornithology
The Craveri's Murrelet Synthliboramphus craveri is an endangered seabird (family Alcidae) endemic to northwestern Mexico, where it breeds on rocky islands throughout the Gulf of California (GOC). Nesting records are scarce for most of these islands, and much of the available information relies on historical data collected more than 50 years ago. Beginning in 2009 through to 2023, we performed intermittent nest searches on five islands in the Midriff Islands of the GOC. Starting in 2018 on Alcatraz Island and starting in 2022 on San Pedro Mártir Island, we monitored nests to determine average clutch size and hatching success. We …
A Petrel Breeding Diversity Hotspot: Raivavae Island (Austral Islands, French Polynesia), With A Need For Conservation Action, Vincent Bretagnolle, Yves David, Thomas Ghestemme, Jean-François Butaud, Tehani Withers, Hadoram Shirihai, Jean-Claude Thibault
A Petrel Breeding Diversity Hotspot: Raivavae Island (Austral Islands, French Polynesia), With A Need For Conservation Action, Vincent Bretagnolle, Yves David, Thomas Ghestemme, Jean-François Butaud, Tehani Withers, Hadoram Shirihai, Jean-Claude Thibault
Marine Ornithology
Raivavae is a small island in the Austral Islands of French Polynesia that is surrounded by a lagoon with 28 islets. Its marine avifauna is one of the least known and least studied in French Polynesia. Overall, seabird surveys in the various Austral Islands have been extremely sparse. This study addresses this need, using both historical and recent findings. The results show high species richness, with 10 breeding procellarid species, though none are numerous. We also update the knowledge on breeding petrels from other Austral Islands (except Rapa) and discuss the consequences of these findings in terms of their conservation …
Cruising For Data: Defining The Seabird Community From Vessels Of Opportunity In Canada’S Eastern Arctic, Carina Gjerdrum, Sarah N. P. Wong, Mark L. Mallory
Cruising For Data: Defining The Seabird Community From Vessels Of Opportunity In Canada’S Eastern Arctic, Carina Gjerdrum, Sarah N. P. Wong, Mark L. Mallory
Marine Ornithology
Information on marine bird abundance and distribution at sea is required to identify important habitat for protection, mitigate pressures from human activities, and understand the role of seabirds in marine food webs. Arctic waters support millions of marine birds, including globally significant numbers of some species, but the remote location coupled with the financial costs of research and monitoring in this region limit our ability to quantify marine habitat use. We used standardized survey data collected from vessels of opportunity during 2007-2023 to describe the distribution and abundance of marine birds in eastern Canadian Arctic waters and to examine the …