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The University Of Guelph’S Arboretum Winter Bird Count, 1980-2022, Brandon P.M. Edwards, Alan P. Watson, Chris G. Earley

Ontario Birds

No abstract provided.

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A Possible Canvasback X Ruddy Duck Hybrid, Brandon P.M. Edwards, Mike Bouman

Ontario Birds

No abstract provided.

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Great Egrets Nesting At Presqu’Ile Provincial Park, 1999-2021: Abundance And Interactions With Cormorants And Raccoons, D.V. Chip Weseloh, David J. Moore

Ontario Birds

No abstract provided.

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Peculiarities In The Appearance And Moult Of Long-Tailed Duck, Peter S. Burke, Tim Lucas, Kevin A. Mclaughlin

Ontario Birds

This paper reviews the literature on moults and resulting appearances of the Long-tailed Duck (Clangula hyemalis; LTDU), focusing on the high degree of plumage variation observed in this species, which is unique among ducks. In addition to exhibiting three visibly different plumages in its first year of life, and two visibly different plumages every year thereafter, the LTDU also shows a high variation among individuals, due, at least in part, to individual variation in the prolongation of each moult. This has led to confusion for those describing LTDU plumage and moult patterns in the past. Previous (and some erroneous) hypotheses …

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Table Of Contents, Ontario Field Ornithologists

Ontario Birds

No abstract provided.

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Full Issue, Ontario Field Ornithologists

Ontario Birds

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Cover, Peter S. Burke

Ontario Birds

No abstract provided.

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Loafing And Sleeping Behaviour Of Trumpeter Swans, Harry G. Lumsden, Gerry Markhoff, Gary Lane, Allan Scott

Ontario Birds

An observational study of loafing and sleeping behaviour of Trumpeter Swans was conducted in southern Ontario throughout the year in 2018 and 2019. Like other birds, these swans have the ability to close down one brain hemisphere at a time during rest, which is indicated by eye closure. We quantified rates of closure of eyes during sleeping bouts for both breeding and non-breeding swans. Single eye closure varied in frequency, duration and in terms of which hemisphere was shut down. Increasing duration of eye closure over time indicated an increased sense of security with surrounding in one mated pair. Proportion …

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Predation Of Bank Swallow Nestlings By Ring-Billed Gulland Common Grackle, Tianna Burke

Ontario Birds

No abstract provided.

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Great Lakes Piping Plover Family Using Habitat Outsideprotected Area, Monica A. Fromberger

Ontario Birds

No abstract provided.

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Changes In Abundance Of Least Bitterns In Ontario,1995-2019, Michael J. Kirchin, Giuseppe E. Fiorino, Greg P. Grabas, Douglas C. Tozer

Ontario Birds

Populations of many breeding marsh bird species continue to decline in the southern Great Lakes basin, although this is not the case for the threatened Least Bittern. Recent analysis based on data from the Great Lakes Marsh Monitoring Program of Birds Canada shows that its abundance has increased consistently since the mid-2000s throughout the lower Great Lakes in the U.S. and Canada, with the highest abundance occurring in recent years. In this study, we expanded on these findings by assessing patterns in abundance of Least Bitterns among different geographical locations in Ontario and across years from 1995 to 2019. We …

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Common Gallinule Banding In Ontario, Ross W. Wood, Barbara A. Campbell, Shawn W. Meyer, Tore Buchanan

Ontario Birds

Between 2012 and 2017, we conducted a Common Gallinule banding study to determine the feasibility of catching and banding gallinule with an airboat in Ontario, estimate how many birds could potentially be banded and subsequently encountered, calculate an index of productivity and assess whether enough data could be obtained to inform management decisions and conservation planning. We captured gallinules using dip nets and spotlights at night from an airboat. In total, we banded 440 (approximately 28%) of the 1,564 gallinules that have ever been banded in Ontario. Five of our banded birds were subsequently encountered, four within Ontario and one …

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Evaluation Of Functional Communication Training With Sign Mands For Non-Vocal Children With Autism Spectrum Disorder, Hayley Margaret Mcmanus

USF Tampa Graduate Theses and Dissertations

Children with autism spectrum disorders (ASD) often experience difficulties in both vocal and non-vocal communication, which can lead to problem behavior as a means of expressing needs and wants. Functional communication training (FCT) has been shown to be effective in teaching functional communicative responses (FCRs) and decreasing problem behavior. However, studies on the use of sign language as a communicative response or modality in FCT have been limited, despite its benefits, including feasibility and low response effort, compared to other modalities, such as picture cards and augmentative and alternative communication devices. This study evaluated FCT using sign language mands for …

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New Evidence Of Mid-Pleistocene Glaciations In The French Jura Mountains Using Debris Flow Deposits And U/Th Dating Of Speleothems (Verneau Karst Network), Margot Vivier, Stéphane Jaillet, Eglantine Husson, Edwige Pons Branchu, Jean-Baptiste Charlier

International Journal of Speleology

We redefine the extent of former glaciers in the northern Jura Mountains through the study of endokarst deposits. Sedimentary deposits (pebbly debris flows, laminated clays, and allochthonous limestone blocks) and chemical deposits (speleothems) were identified and studied using three complementary approaches: (i) detailed geomorphological mapping, (ii) petrographic analysis, and (iii) U/Th-dating. In addition, a surface geomorphological analysis made it possible to calculate the minimum erosion time required for the formation of the sinkhole linked to the underground study site. The study site is the Dolois Chamber, an underground site upstream of the Verneau karst network (Doubs Department, France). The combined …

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Reviews: The Gull Guide: North America (Ayyash, A); Flight Of The Godwit: Tracking Epic Shorebird Migrations (Beehler, Bm); Blue-Footed Boobies: Sibling Conflict And Sexual Infidelity On A Tropical Island (Drummond, H); We Loved It All: A Memory Of Life (Millet, L), Marine Ornithology

Marine Ornithology

No abstract provided.

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Evidence Of Red-Billed Tropicbird Phaethon Aethereus Breeding In The Gulf Of Guinea, Gustavo Marino, Gabriel Oquiongo, Isadora L. Hahn, Pedro Pereira, Joana Pereira, Ricardo F. De Lima

Marine Ornithology

Red-billed Tropicbird Phaethon aethereus has been considered vagrant in the Gulf of Guinea, although with suggestions of sporadic breeding at Tinhosas Islets, south of Príncipe Island. Here, we report repeated visits of birds to potential nesting sites, aggressive territorial behavior, and pair interactions on the coastal cliffs in the southern portion of São Tomé Island and nearby islets of Rolas and Sete Pedras. These observations strongly suggest that the species breeds at these locations, which would expand the known breeding range in the eastern Atlantic. Future work is needed to clarify the status of the species in the region.

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Assessment Of The Conservation Status Of The Fuegian Steamer Duck Tachyeres Pteneres In Chile, Gonzalo Medina-Vogel, Gabriela Molina-Maldonado, Carlos Calvo-Mac, Nicole Delgado-Parada, Valeria Gómez-Silva, Elke Schüttler, Benjamín Santibáñez-Bórquez, Jaime R. Rau, Jaime A. Cursach

Marine Ornithology

The Fuegian Steamer Duck Tachyeres pteneres is endemic to the southern cone of South America. Though classified as Least Concern by the International Union for Conservation of Nature (IUCN) Red List, it is categorized as Near Threatened by the Chilean Ministry of Environment. However, few studies have been conducted on this species, and large portions of its distribution remain unsurveyed. This lack of information hinders a full appreciation of the species' conservation status under the IUCN criteria. We therefore conducted extensive surveys along the southern coast of Chile. Between March 2021 and April 2023, we carried out visual censuses at …

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Relationships Between Stable Isotopes And Mercury Contaminants In Feathers Of Black-Tailed Gull Larus Crassirostris, Yasuaki Niizuma

Marine Ornithology

The feathers of seabirds are widely used as appropriate indicators for various aspects of avian ecology and toxicology. To reveal total mercury (Hg) concentrations and the connection to diet using stable isotope analysis in Black-tailed Gulls Larus crassirostris, feathers were collected from 10 carcasses from the breeding colony on Kabushima Island during the incubation period in 2020. Total Hg concentrations in primary remiges were found to decrease during the molt sequence. The innermost primaries (P1), the first to be replaced after breeding, had the highest Hg concentrations of all feathers (7.73 ± 2.37 μg/g dry weight). The concentration of Hg …

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Seasonal And Spatial Patterns Of Avian Assemblages In The Eastern Taiwan Strait: Implications For Offshore Wind Farm Development, Mei-Ling Bai, Chia-Hsiang Huang, Yu-Yi Lien

Marine Ornithology

The eastern Taiwan Strait, a region situated along the East Asian-Australasian Flyway and currently undergoing rapid offshore wind energy development, remains poorly studied with respect to its seabird assemblages. Through intensive vessel-based transect surveys conducted between 2014 and 2021, this study documented 22,187 birds from 105 species across 10 orders and 29 families. Migratory non-seabirds accounted for 55.2% of individuals and dominated the species richness, highlighting the region's importance for migratory pathways. Seabird density was relatively low, however, consistent with trends in other tropical regions, and this pattern may also reflect both environmental degradation and methodological differences in density estimation. …

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Status Of The Least Storm Petrel Hydrobates Microsoma In Peru, Mauricio Ugarte

Marine Ornithology

The occurrence of the Least Storm Petrel Hydrobates microsoma in Peru has been considered somewhat hypothetical by some authors, as its presence was previously supported only by sight records dating back to 1982. In this note, I confirm the presence of the species in Peru based on the re-examination of three specimens deposited in the Natural History Museum of Los Angeles. I also provide a summary of the historical records of its occurrences in Peru. Least Storm Petrel should be considered an uncommon boreal migrant in Peruvian marine waters.

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Wind-Blown Pelagic Birds: First Record Of Short-Tailed Shearwater Ardenna Tenuirostris, Wedge-Tailed Shearwater Ardenna Pacifica, White-Tailed Tropicbird Phaethon Lepturus, And Lesser Noddy Anous Tenuirostris For Goa, India, Rupali Pandit, Aniket P. Naik Gaonkar, Ankit Kumar, Omkar Damle, Mangirish Dharwadkar

Marine Ornithology

We report four new records of seabirds for the state of Goa, India: Short-tailed Shearwater Ardenna tenuirostris, Wedge-tailed Shearwater Ardenna pacifica, White-tailed Tropicbird Phaethon lepturus, and Lesser Noddy Anous tenuirostris. Due to storms with torrential rains during June and July 2024, these pelagic birds were wind-blown and found stranded along the coastline. They were subsequently rescued and taken to ReefWatch Marine Conservation, a rehabilitation centre in Benaulim, Goa. However, the majority of these birds did not survive due to various causes.

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From Kerguelen To Brazil: Insights Into The Movement And Health Of A Threatened Seabird, The White-Chinned Petrel Procellaria Aequinoctialis, Daphne Wrobel Goldberg, Karine Delord, Gabriela Bezerra, Janaina Rocha Lorenço, Beatriz Souto De Freitas Vieira, Livia Ribeiro Saraiva, Célia Lesage, Christophe Barbraud, Caio Azevedo Marques, Tatiana Neves

Marine Ornithology

This study presents the case of a White-chinned Petrel Procellaria aequinoctialis that was tagged as a fledgling in April 2023 in the Kerguelen Islands, southern Indian Ocean, and subsequently rescued on the southeast coast of Brazil in July 2024. Upon recovery, the petrel displayed symptoms of exhaustion, malnutrition, and anemia, highlighting the substantial energy demands associated with its extensive journey of over 10,000 km. Rehabilitation efforts were successful, resulting in the bird's release after a month of intensive care, which involved nutritional support and monitoring of its health parameters. This case highlights the importance of long-term coastal and marine monitoring …

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Population Survey Of Southern Buller’S Albatross Thalassarche Bulleri Bulleri On The Solander Islands / Hautere, March 2024, Peter G. H. Frost, Barry G. Baker, Johannes H. Fischer, Paul M. Sagar

Marine Ornithology

An aerial photographic survey of the Southern Buller's Albatross Thalassarche bulleri bulleri population breeding on the Solander Islands / Hautere was undertaken on 09 March 2024, mid-way through the birds' incubation period. Overall, 6,761 individuals were counted: 6,215 (92%) on Great Solander and 546 (8%) on Little Solander. Of these, 4,213 were sitting on nests, 368 were partners to sitting birds, 573 were standing near empty nests, and 145 were apparently loafing. The status of the remaining 1,462 individuals (22% of the total) was uncertain. Assuming that their status was in the same proportions to those of the clearly observed …

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Occurrence, Distribution, And Mortality Of Seabirds In South And Southeast Brazil, 2015–2019, Carla B. Barbosa, André M. Da Silva, Simone B. Leonardi, Tami A. Ballabio, Guilherme Fluckiger, Daniela F. Godoy, Henrique Chupil, Pedro V. Castilho, Karina R. Groch, Cristiane K. M. Kolesnikovas, Jeferson L. Dick, Marta J. Cremer, Camila Domit, Rodrigo R. Valle, Andrea Maranho, Mariana K. Britto, Hugo Gallo, André S. Barreto

Marine Ornithology

We compiled data on seabirds that use coastal and coastal/oceanic habitats, recorded alive and dead, during four years of beach monitoring in Santa Catarina, Paraná, and São Paulo states, along Brazil's south and southeast coast. This is a pioneering study, as no previous studies of this magnitude have been done in Brazil. Among the 26,900 individuals collected, 45 species were identified, distributed across four orders: Charadriiformes (29 species), Pelecaniformes (12 species), Sphenisciformes (one species), and Suliformes (three species). We determined maturity and sex for the five most abundant species: Magellanic Penguin Spheniscus magellanicus, Kelp Gull Larus dominicanus, Brown Booby Sula …

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Status Of Seabirds In Indonesian Waters, Muhammad Iqbal, Gusti Ayu Widayanti, Ina Aprillia, Diah Komala Sari, Nur Arifah

Marine Ornithology

We report the current status of seabirds in Indonesian waters, where a total of 74 species have been recorded. This includes nine species classified as threatened and 56 species protected under Indonesian law. The majority of seabird species in Indonesia are non-breeding visitors; only 16 have been recorded breeding in the region. Since the 2000s, several new species have been documented, including Red Phalarope Phalaropus fulicarius, Lesser-backed Gull Larus fuscus, Red-billed Tropicbird Phaethon aethereus, Beck's Petrel Pseudobulweria becki, Heinroth's Shearwater Puffinus heinrothi, Slaty-backed Gull Larus schistiagus, and Slender-billed Gull Chroicocephalus genei. While Indonesian waters encompass extensive and diverse seabird habitats, …

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First Confirmed Record Of Common Murre Uria Aalge For The Mid-Atlantic Azores, Luís M. D. Barcelos, Rúben Coelho, João P. Barreiros

Marine Ornithology

On 06 December 2024, a Common Murre Uria aalge was photographed in Praia da Vitória fishing harbour, Terceira, Azores. This constitutes the first record for the archipelago, far from the species' usual nearshore range. The bird remained for several days; plumage features confirmed subspecies U. a. aalge. Alcidae are vagrants in the Azores, with the Little Auk Alle alle and Atlantic Puffin Fratercula arctica most often reported. This observation refines knowledge of seabird distribution and vagrancy in this mid-Atlantic oceanic archipelago.

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Quantifying The Effect Of Time On Geolocation Accuracy In Seabirds, Sophie Bennett, Richard A. Phillips, Jonathan A. Green

Marine Ornithology

Light-based geolocation can be an effective tool for understanding movements and distributions of free-ranging seabirds, particularly during migrations and long-distance foraging trips. The light levels recorded by geolocators (global location sensors; GLS loggers) are used to infer latitude and longitude of individuals from day length and time of local midday relative to UTC (Coordinated Universal Time), respectively. However, there is an associated inaccuracy in these location estimates, associated with both systematic and random error. Previous studies have quantified this error by calculating distances to locations over the same time period derived from more accurate devices such as satellite transmitters (platform …

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From Tropical Shores To High-Altitude Lakes: Preliminary Assessment Of Trans-Himalayan Migration Of Brown-Headed Gulls Chroicocephalus Brunnicephalus Between Sri Lanka And The Tibetan Plateau, Gayomini Panagoda, Iromi K. Wijethunge, Beixi Zhang, Fanjuan Meng, Yiwen Chen, Sarath Kotagama, Taej Mundkur, Sivananinthaperumal Balachandran, Lei Cao, Sampath S. Seneviratne

Marine Ornithology

The Brown-headed Gull (BHGU) Chroicocephalus brunnicephalus is a common non-breeding migrant to Sri Lanka's coasts. However, its migration across the Central Asian Flyway—traversing numerous geographic barriers such as the Himalayas and the Tibetan Plateau to reach the southern Indian peninsula and Sri Lanka—has not been studied. We GPS-tracked two BHGUs between Sri Lanka and their breeding grounds on the Tibetan Plateau from 2021 to 2023, documenting four migrations in total—three northward and one southward. During northward migration (25 April-20 May), the gulls covered 2,786.7 ± 168.0 km in 6.8 ± 1.05 d without any stopovers, although they made several rest …

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California Brown Pelican Pelecanus Occidentalis Community Science Project: Potential For Population Monitoring, Deborah L. Jaques, Tamara M. Russell, Joseph R. Liebezeit, Anna Weinstein, Richard R. Veit, Daniel Orr, Michael W. Parker, Jim A. Howard, David M. Mazurkiewicz, Daniel W. Anderson, Yuliana Bedolla-Guzmán

Marine Ornithology

From 2016 to 2019, we monitored the distribution, abundance, and age structure of California Brown Pelican Pelecanus occidentalis californicus at nearshore communal roosts along the U.S. West Coast. This effort used “snapshot” surveys during spring and fall, simultaneously engaging up to 111 “community science” participants, i.e., volunteers, on single dates. Volunteers surveyed up to 89 sites and found as many as 22,000 Brown Pelicans. We derived abundance and population structure indices from these data and sought relationships to annual breeding season metrics and large-scale oceanographic indices in the California Current System (CCS). The proportion of immature birds increased during the …

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Behavioral Response Of Atlantic Puffins Fratercula Arctica To Marine Heatwaves In The Gulf Of Maine, Usa: A Webcam Study, Julie Wallace, Keenan Yakola, Stephen W. Kress, Donald E. Lyons

Marine Ornithology

We observed a family of Atlantic Puffins Fratercula arctica in a burrow on Seal Island National Wildlife Refuge in the Gulf of Maine, USA, during the 2017-2020 and 2022 breeding seasons. The burrow was equipped with a high-resolution web camera, which allowed 24-hour daily observations. We investigated the impacts of elevated sea surface temperature (SST) and marine heatwaves (MHWs), which are linked to low food availability, on chick provisioning and burrow attendance. In 2017, 2019, 2020, and 2022, the female was the primary provisioner, providing twice as many feedings as the male, and the male was the primary burrow guardian, …

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Full-Text Articles in Entire DC Network

The University Of Guelph’S Arboretum Winter Bird Count, 1980-2022, Brandon P.M. Edwards, Alan P. Watson, Chris G. Earley

Ontario Birds

A Possible Canvasback X Ruddy Duck Hybrid, Brandon P.M. Edwards, Mike Bouman

Ontario Birds

Great Egrets Nesting At Presqu’Ile Provincial Park, 1999-2021: Abundance And Interactions With Cormorants And Raccoons, D.V. Chip Weseloh, David J. Moore

Ontario Birds

Peculiarities In The Appearance And Moult Of Long-Tailed Duck, Peter S. Burke, Tim Lucas, Kevin A. Mclaughlin

Ontario Birds

Table Of Contents, Ontario Field Ornithologists

Ontario Birds

Full Issue, Ontario Field Ornithologists

Ontario Birds

Cover, Peter S. Burke

Ontario Birds

Loafing And Sleeping Behaviour Of Trumpeter Swans, Harry G. Lumsden, Gerry Markhoff, Gary Lane, Allan Scott

Ontario Birds

Predation Of Bank Swallow Nestlings By Ring-Billed Gulland Common Grackle, Tianna Burke

Ontario Birds

Great Lakes Piping Plover Family Using Habitat Outsideprotected Area, Monica A. Fromberger

Ontario Birds

Changes In Abundance Of Least Bitterns In Ontario,1995-2019, Michael J. Kirchin, Giuseppe E. Fiorino, Greg P. Grabas, Douglas C. Tozer

Ontario Birds

Common Gallinule Banding In Ontario, Ross W. Wood, Barbara A. Campbell, Shawn W. Meyer, Tore Buchanan

Ontario Birds

Evaluation Of Functional Communication Training With Sign Mands For Non-Vocal Children With Autism Spectrum Disorder, Hayley Margaret Mcmanus

USF Tampa Graduate Theses and Dissertations

New Evidence Of Mid-Pleistocene Glaciations In The French Jura Mountains Using Debris Flow Deposits And U/Th Dating Of Speleothems (Verneau Karst Network), Margot Vivier, Stéphane Jaillet, Eglantine Husson, Edwige Pons Branchu, Jean-Baptiste Charlier

International Journal of Speleology

Reviews: The Gull Guide: North America (Ayyash, A); Flight Of The Godwit: Tracking Epic Shorebird Migrations (Beehler, Bm); Blue-Footed Boobies: Sibling Conflict And Sexual Infidelity On A Tropical Island (Drummond, H); We Loved It All: A Memory Of Life (Millet, L), Marine Ornithology

Marine Ornithology

Evidence Of Red-Billed Tropicbird Phaethon Aethereus Breeding In The Gulf Of Guinea, Gustavo Marino, Gabriel Oquiongo, Isadora L. Hahn, Pedro Pereira, Joana Pereira, Ricardo F. De Lima

Marine Ornithology

Assessment Of The Conservation Status Of The Fuegian Steamer Duck Tachyeres Pteneres In Chile, Gonzalo Medina-Vogel, Gabriela Molina-Maldonado, Carlos Calvo-Mac, Nicole Delgado-Parada, Valeria Gómez-Silva, Elke Schüttler, Benjamín Santibáñez-Bórquez, Jaime R. Rau, Jaime A. Cursach

Marine Ornithology

Relationships Between Stable Isotopes And Mercury Contaminants In Feathers Of Black-Tailed Gull Larus Crassirostris, Yasuaki Niizuma

Marine Ornithology

Seasonal And Spatial Patterns Of Avian Assemblages In The Eastern Taiwan Strait: Implications For Offshore Wind Farm Development, Mei-Ling Bai, Chia-Hsiang Huang, Yu-Yi Lien

Marine Ornithology

Status Of The Least Storm Petrel Hydrobates Microsoma In Peru, Mauricio Ugarte

Marine Ornithology

Marine Ornithology

Marine Ornithology

Population Survey Of Southern Buller’S Albatross Thalassarche Bulleri Bulleri On The Solander Islands / Hautere, March 2024, Peter G. H. Frost, Barry G. Baker, Johannes H. Fischer, Paul M. Sagar

Marine Ornithology

Marine Ornithology

Status Of Seabirds In Indonesian Waters, Muhammad Iqbal, Gusti Ayu Widayanti, Ina Aprillia, Diah Komala Sari, Nur Arifah

Marine Ornithology

First Confirmed Record Of Common Murre Uria Aalge For The Mid-Atlantic Azores, Luís M. D. Barcelos, Rúben Coelho, João P. Barreiros

Marine Ornithology

Quantifying The Effect Of Time On Geolocation Accuracy In Seabirds, Sophie Bennett, Richard A. Phillips, Jonathan A. Green

Marine Ornithology

Marine Ornithology

Marine Ornithology

Behavioral Response Of Atlantic Puffins Fratercula Arctica To Marine Heatwaves In The Gulf Of Maine, Usa: A Webcam Study, Julie Wallace, Keenan Yakola, Stephen W. Kress, Donald E. Lyons

Marine Ornithology