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Article
Nicholas J. Bayly, Auteur ; Kenneth V. Rosenberg, Auteur ; Camila Gómez, Auteur ; Keith A. Hobson, AuteurThe effect of habitat choice on fuelling behaviour and the organization of migration in birds has rarely been examined, despite the potential impact of widespread anthropogenic transformation of stopover regions. High energetic requirements in m[...]
Article
Nicholas J. Bayly, Auteur ; Kenneth V. Rosenberg, Auteur ; Wendy E. Easton, Auteur ; Camila Gómez, Auteur ; Jay Carlisle, Auteur ; David N. Ewert, Auteur ; Anna Drake, Auteur ; Laurie Goodrich, AuteurNearly 300 species of landbirds, whose populations total billions, migrate between the Neotropics and North America. Many migratory populations are in steep decline, and migration is often identified as the greatest source of annual mortality. I[...]
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Laura Cárdenas-Ortíz, Auteur ; Nicholas J. Bayly, Auteur ; Gabriel J. Colorado Z., Auteur ; Keith A. Hobson, AuteurCanada Warblers (Cardellina canadensis) are long-distance Neotropical migrants, but little is known about their migratory behavior and ecology. We examined the fall migration of Canada Warblers at two sites, Darién and the Sierra Nevada de Santa[...]
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Camila Gómez, Auteur ; Valentina Gómez-Bahamón, Auteur ; Laura Cárdenas-Ortíz, Auteur ; Nicholas J. Bayly, AuteurABSTRACT The Sierra Nevada de Santa Marta in northern Colombia has been identified as a critical spring stopover site for at least one Neotropical migratory bird species prior to crossing the Caribbean sea on migration. The strategic location of[...]
Article
Nicholas J. Bayly, Auteur ; Camila Gómez, AuteurMigration represents one of the most vulnerable stages of a migrant's life cycle, but the strategies and stopover sites used by Neotropical migrants in Central America are not well known. We carried out constant-effort mist netting and conducted[...]
Article
Nicholas J. Bayly, Auteur ; Stephen J. R. Rumsey, Auteur ; Jacquie A. Clark, AuteurThe bi-annual crossing of the Sahara desert is a considerable energetic challenge faced by approximately a quarter of Europe's total bird population, as they migrate to and from sub-Saharan non-breeding grounds. Where, when and how migratory bir[...]
Article
Camila Gómez, Auteur ; Valentina Gómez-Bahamón, Auteur ; Laura Cárdenas-Ortíz, Auteur ; Nicholas J. Bayly, Auteur
Article
Esteban Botero-Delgadillo, Auteur ; Nicholas J. Bayly, AuteurMorphology is commonly used as a predictor of ecological relationships among species when studying local assemblages of Neotropical birds. Nevertheless, most evidence supporting ecomorphological correspondence in birds comes from studies of comm[...]
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Nicholas J. Bayly, Auteur ; Camila Gómez, Auteur ; Keith A. Hobson, AuteurStopover sites used to accumulate the energy that fuels migration, especially those used prior to crossing ecological barriers, are regarded as critically important for the survival of NearcticNeotropical migratory birds. To assess whether South[...]
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Nicholas J. Bayly, Auteur ; Philip W. Atkinson, Auteur ; Stephen J. R. Rumsey, AuteurTo African-Palearctic migratory birds that spend the non-breeding season in sub-Saharan Africa, the Sahara desert is an ecological barrier that must be crossed using large energy reserves stored at stopover sites either side. Given the coinciden[...]
Article
Camila Gomez-Montes, Auteur ; Nicholas J. Bayly, AuteurTo ensure adequate protection of nonbreeding habitats used by Neotropical migratory landbirds, we must first address questions about habitat use and quality. On the Yucatan peninsula, migrants use many habitats, several of which remain unstudied[...]
Article
Camila Gómez, Auteur ; Nicholas J. Bayly, Auteur ; Kenneth V. Rosenberg, AuteurMigratory routes and stopover sites used by migrant landbirds may vary among seasons and years. Understanding the degree of such variation is an important aspect of migrant ecology, especially in South America, where routes and sites are not wel[...]
