Results 11 to 20 of about 27,623 (118)

Evidence that birds sleep in mid-flight

open access: yesNature Communications, 2016
Whether and how birds sleep during long-distance flights has remained a mystery. Here, Rattenborg and colleagues show for the first time that frigatebirds can sleep during flight, but do so in remarkably small amounts.
Niels C Rattenborg   +7 more
doaj   +1 more source

Long-term changes in arrival timing and site functionality in two passerine species during spring migration in northeastern Pennsylvania, USA

open access: yesJournal of Field Ornithology, 2023
Although there is abundant evidence that migrant landbirds have modified their migratory timing in response to climate change, few studies have looked for evidence of long-term changes in site use or function, while even fewer studies have looked for ...
Robert J. Smith   +4 more
doaj   +1 more source

Analyzing time‐ordered event data with missed observations

open access: yesEcology and Evolution, 2017
A common problem with observational datasets is that not all events of interest may be detected. For example, observing animals in the wild can difficult when animals move, hide, or cannot be closely approached. We consider time series of events recorded
Adriaan M. Dokter   +5 more
doaj   +1 more source

Ecologic Immunology of Avian Influenza (H5N1) in Migratory Birds

open access: yesEmerging Infectious Diseases, 2007
The claim that migratory birds are responsible for the long-distance spread of highly pathogenic avian influenza viruses of subtype H5N1 rests on the assumption that infected wild birds can remain asymptomatic and migrate long distances unhampered.
Thomas P. Weber, Nikolaos I. Stilianakis
doaj   +1 more source

Ghrelin, not corticosterone, is associated with transitioning of phenotypic states in a migratory Galliform

open access: yesFrontiers in Endocrinology, 2023
In both captive and free-living birds, the emergence of the migratory phenotype is signalled by rapid and marked increases in food intake and fuelling, as well as changes in amount of nocturnality or migratory restlessness.
Valeria Marasco   +5 more
doaj   +1 more source

Flyway connectivity and exchange primarily driven by moult migration in geese

open access: yesMovement Ecology, 2019
Background For the conservation and management of migratory species that strongly decrease or increase due to anthropological impacts, a clear delineation of populations and quantification of possible mixing (migratory connectivity) is crucial.
A. Kölzsch   +7 more
doaj   +1 more source

Migration stopover ecology of Cinnamon Teal in western North America

open access: yesEcology and Evolution, 2021
Identifying migration routes and fall stopover sites of Cinnamon Teal (Spatula cyanoptera septentrionalium) can provide a spatial guide to management and conservation efforts, and address vulnerabilities in wetland networks that support migratory ...
Desmond A. Mackell   +7 more
doaj   +1 more source

Avian Malaria and Related Parasites from Resident and Migratory Birds in the Brazilian Atlantic Forest, with Description of a New Haemoproteus Species

open access: yesPathogens, 2021
Determining the prevalence and local transmission dynamics of parasitic organisms are necessary to understand the ability of parasites to persist in host populations and disperse across regions, yet local transmission dynamics, diversity, and ...
Carolina C. Anjos   +11 more
doaj   +1 more source

Migratory songbirds and urban window collision mortality: vulnerability depends on species, diel timing of migration, and age class

open access: yesAvian Conservation and Ecology, 2022
Hundreds of millions of birds are estimated to die annually in North America by colliding with windows, and understanding the species-level correlates of collision mortality is an important step towards mitigation.
Olivia M. Colling   +3 more
doaj  

Using Avian Radar to Examine Relationships Among Avian Activity, Bird Strikes, and Meteorological Factors

open access: yesHuman-Wildlife Interactions, 2017
Radar systems designed to detect avian activity at airfields are useful in understanding factors that influence the risk of bird and aircraft collisions (bird strikes).
Peter S. Coates   +4 more
doaj   +1 more source

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