Article
Ornithology
Luke J. Sutton, David L. Anderson, Miguel Franco, Christopher J. W. McClure, Everton B. P. Miranda, F. Hernan Vargas, Jose De J. Vargas Gonzalez, Robert Puschendorf
Summary: Climate change and subsequent habitat loss may result in substantial losses in distribution for the Harpy Eagle across the southern edge of its range.
Article
Ornithology
Charlotte M. Probst, Joel Ralston, Ian Bentley
Summary: The study reveals that there is no significant relationship between bill morphology and climate variables across bird species like Toxostoma thrashers, suggesting other factors like foraging behavior may play a more important role in shaping bill morphology. While some species within Toxostoma thrashers follow Allen's rule, the relationship between climate and bill morphology varies in strength and direction across different species. Additionally, in extremely hot climates, there may be a reversal of Allen's rule where bird bills may function as heat sinks rather than heat radiators.
JOURNAL OF AVIAN BIOLOGY
(2022)
Article
Ornithology
Alicia R. Brunner, Peter P. Marra, Christopher M. Tonra
Summary: Neotropical migratory birds wintering in the Caribbean are experiencing variable rainfall patterns, and their temporal flexibility in space use allows them to better track resources. This study found that individuals adjust their space use based on environmental characteristics, food, and habitat structure. This behavioral flexibility is crucial for populations to endure environmental variability.
Article
Ornithology
Jesper Madsen, Jesper Pedersen, Lei Cao, Kevin K. Clausen
Summary: GPS-tagged barnacle geese wintering in an intensively farmed area in Southeast Denmark selected large open grasslands close to their roosts. During March and April, they moved to coastal grasslands in other parts of Denmark or the German Wadden Sea.
JOURNAL OF ORNITHOLOGY
(2022)
Article
Ornithology
Matthew B. Dugas, Shana E. Border
Summary: Offspring traits that are used to obtain parental care play a crucial role in offspring-parent communication by providing parents with information about the current condition and future prospects of their young.
JOURNAL OF ORNITHOLOGY
(2022)
Article
Ornithology
Dimitar Demerdzhiev
Summary: This study found that grassland availability, mean temperature during fledgling period, and rainfall during nestling period are the main factors influencing the breeding success of Long-legged buzzards. Other factors such as human disturbance, Souslik density, habitat diversity, and presence of competitors did not have significant effects. The restoration of grasslands and proper habitat management are crucial for the conservation of this species.
JOURNAL OF ORNITHOLOGY
(2022)
Article
Ornithology
Luke J. Sutton, David L. Anderson, Miguel Franco, Christopher J. W. McClure, Everton B. P. Miranda, F. Hernan Vargas, Jose de J. Vargas Gonzalez, Robert Puschendorf
Summary: Quantifying habitat use is essential for understanding animal survival requirements and conservation planning. The study focused on the Harpy Eagle, a raptor species facing threats from habitat loss. It identified the species-habitat associations and predicted habitat suitability based on the Area of Habitat metric. The study recommended new Key Biodiversity Areas (KBAs) to strengthen the current KBA network, as several important areas of high habitat suitability were lacking coverage.
ORNITHOLOGICAL APPLICATIONS
(2022)
Article
Ornithology
Roberto G. Valle, Francesco Scarton
Summary: This study aimed to assess the effectiveness and safety of drone-conducted monitoring of Purple Heron productivity in wetlands in northeast Italy. The accuracy of drone counts using two different approaches was compared, and it was found that both overflight and close-up drone counts were accurate and caused minimal disturbance. The study highlights the potential of using drones for effective and safe measurement of bird productivity.
ARDEOLA-INTERNATIONAL JOURNAL OF ORNITHOLOGY
(2022)
Article
Biodiversity Conservation
Clement Dabone, Adama Oueda, Lindy J. Thompson, Jacques Boco Adjakpa, Peter D. M. Weesie
Summary: The current catastrophic decline in African vultures is mainly caused by poisoning, consumption, and belief-based use. A survey conducted in Burkina Faso reveals that poisoning is the primary cause of vulture mortality, particularly intentional poisoning using poisoned baits. Unintentional poisoning, electrocution, and motor vehicle collisions are also significant anthropogenic causes of vulture deaths.
BIRD CONSERVATION INTERNATIONAL
(2022)
Article
Ornithology
Devin R. de Zwaan, Andrew Huang, Quinn McCallum, Kiirsti Owen, Myles Lamont, Wendy Easton
Summary: This study demonstrates that refueling rates and stopover quality vary among bird species depending on their life-history strategies, with particular implications for long-distance migratory insectivores. Arrival body condition and subsequent mass gain have a greater influence on stopover duration and departure decisions.
Article
Ornithology
Christopher J. Clark, Barbara Robinson, James V. Remsen
Summary: Female dimorphic hummingbirds show variation in male-like ornamentation. In Anna's Hummingbirds, gorget size increases substantially during the molt from immature to adult plumage. Age explains little of the individual variation in male-like feathers once a female is adult. Female polymorphism is not common in hummingbirds and has only been convincingly demonstrated in a few species.
JOURNAL OF ORNITHOLOGY
(2022)
Article
Ornithology
Rebecca Pederson, Pierrick Bocher, Stefan Garthe, Jerome Fort, Moritz Mercker, Verena Auernhammer, Martin Boschert, Philippe Delaporte, Jaanus Elts, Wolfgang Fiedler, Michal Korniluk, Dominik Krupinski, Riho Marja, Pierre Rousseau, Lukas Thiess, Philipp Schwemmer
Summary: This study verified migration patterns of the Eurasian curlew in the East Atlantic Flyway, showing chain migration behavior. Spring migration occurred earlier than autumn, and southern curlews had a longer nesting period due to early arrival at breeding sites.
JOURNAL OF AVIAN BIOLOGY
(2022)
Article
Biodiversity Conservation
Melina Atencio, Juan Carlos Reboreda, Bettina Mahler
Summary: The endangered Yellow Cardinal has been the focus of a management plan in Argentina, where rescued birds are released back into suitable habitats within their population. However, a study in La Pampa province found that high rates of parasitism by the Shiny Cowbird have resulted in the failure of the reintroduction program. This highlights the need for updated conservation actions and further research on the relationship between the Yellow Cardinal and Shiny Cowbird abundance.
BIRD CONSERVATION INTERNATIONAL
(2022)
Article
Ornithology
Lucy J. Mitchell, Gavin J. Horsburgh, Deborah A. Dawson, Kathryn H. Maher, Kathryn E. Arnold
Summary: Many bird species, especially insectivores, show flexibility in their diet choices according to naturally fluctuating prey abundance. This study analyzed the diet of the European Nightjar using metabarcoding, showing significant variations in diet composition among individuals, years, and months. The findings indicate size-selective foraging and population-level flexibility in prey choice, highlighting the importance of comprehensive reference libraries for dietary studies using metabarcoding.
Article
Ornithology
Mateusz Ledwon, Patricia Szczys
Summary: Patterns of extra pair paternity and intraspecific brood parasitism were studied in a Whiskered Tern population, with low rates observed due to the high male parental investment in the species. Intraspecific brood parasitism had a greater impact on chick proportions compared to extra pair paternity, the latter being relatively rare in this population.
JOURNAL OF ORNITHOLOGY
(2022)
Article
Ornithology
Sage S. Dale, Julianna M. A. Jenkins, Zachary J. Ruff, Leila S. Duchac, Christopher E. McCafferty, Damon B. Lesmeister
Summary: Passive acoustic methods can be used to determine breeding status and sex of Northern Spotted Owls based on their vocalizations. This research has significant implications for noninvasive monitoring and conservation efforts.
JOURNAL OF RAPTOR RESEARCH
(2022)
Article
Ornithology
Pengfei Liu, Meng Lai, Mingjie Wang, Yuehua Sun
Summary: Female song is common in songbirds, and both male and female members of the Plain Laughingthrush species in temperate China sing. There are significant differences in the number of notes, duration, pace, and note structure between male and female songs. Further research is needed to determine the function of female song in this species.
Article
Ornithology
Sofia Galvan, Rafael Barrientos, Sara Varela
Summary: Citizen science is a powerful tool for collecting big data on biodiversity, but concerns have been raised about biases in these databases. This study compared citizen science bird databases with professional databases in Spain and found that, in general, citizen science databases provided better explanations for the studied variables. However, both types of databases contain valuable information on biodiversity and raw observations should not be used directly.
ARDEOLA-INTERNATIONAL JOURNAL OF ORNITHOLOGY
(2022)
Article
Ornithology
Aneta Arct, Szymon M. Drobniak, Samantha Mellinger, Rafal Martyka, Lars Gustafsson, Mariusz Cichon
Summary: The study suggests that females may engage in extra-pair copulations to modify their initial mate choice when constrained by their social mate. Factors such as genetic similarity, adult phenotypic traits, and partner age can affect extra-pair paternity patterns, with the interaction between social partners' ages playing an important role. The results highlight the importance of considering both male and female characteristics in investigating extra-pair paternity patterns.
Article
Ornithology
Samuel P. Slowinski, Aidan J. Geissler, Nicole Gerlach, Britt J. Heidinger, Ellen D. Ketterson
Summary: The susceptibility to haemosporidian infections in dark-eyed juncos increases with host age, but is not affected by experimentally elevated levels of testosterone. This suggests that older juncos are more likely to be infected with haemosporidians due to higher cumulative exposure risk and potentially long-term chronic infections.
JOURNAL OF AVIAN BIOLOGY
(2022)
