Aerial insectivores (birds that forage on aerial insects) have experienced significant
population declines in North America. Numerous hypotheses have been proposed for these …

Flying animals use aerial habitats to forage, communicate and travel. However, human
activities that fragment aerial habitat with built structures, noise, and chemical or light …

Identifying the mechanisms of ecological change is challenging in the absence of long-term
data, but stable isotope ratios of museum specimen tissues may provide a record of diet and …

Aim A full annual cycle approach to conservation and understanding of regional population
trends requires an understanding of migratory connectivity. We present tracking data on the …

Determining the year-round spatial distributions of at-risk avian migratory species is critical
for effective conservation. High-precision tracking enables the identification of distant …

Over one third of North American bird species are in decline, and for many species, we still
lack fundamental biogeographic information such as migration routes and nonbreeding …

Due to a long running research bias toward the breeding season, there are major gaps in
knowledge on the basic nonbreeding ecology of many species, preventing a full‐annual …

How animals choose habitats during periods of inactivity, such as roosting or resting, is an
often overlooked aspect of habitat preference that can differ significantly from how habitats …

Although miniaturized data loggers allow new insights into avian migration, incomplete
knowledge of basic patterns persists, especially for nightjars. Using GPS data loggers, this …

Phenology match–mismatch usually refers to the extent of an organism's ability to match
reproduction with peaks in food availability, but when mismatch occurs, it may indicate a …