Conditions at autumn stopover sites affect survival of a migratory passerine
نویسندگان
چکیده
منابع مشابه
Prey abundance and habitat use by migratory shorebirds at coastal stopover sites in Connecticut
Stopover areas are vital for the successful migration of many species of shorebirds, as they, in part, allow individuals to deposit large quantities of fat needed to fuel their northward and southward journeys. While much research has focused on bird migration, few studies closely examine the environmental characteristics of specific stopover areas. For our study, we conducted prey availability...
متن کاملStopover ecology of a migratory ungulate.
1. Birds that migrate long distances use stopover sites to optimize fuel loads and complete migration as quickly as possible. Stopover use has been predicted to facilitate a time-minimization strategy in land migrants as well, but empirical tests have been lacking, and alternative migration strategies have not been considered. 2. We used fine-scale movement data to evaluate the ecological role ...
متن کاملPatterns of fuel use and storage in Migrating Passerines in relation to fruit resources at autuMn stoPover sites
Resumen.—La tasa de acumulación de recursos energéticos por parte de las aves que se encuentran en migración puede indicar la calidad del hábitat en los sitios de paradas migratorias. Sin embargo, se sabe poco sobre acerca de cómo los hábitos de alimentación y la disponibilidad de alimentos afectan el metabolismo de las grasas y proteínas de aves silvestres en los sitios de parada. Comparamos i...
متن کاملAllocation of endogenous and dietary protein in the reconstitution of the gastrointestinal tract in migratory blackcaps at stopover sites.
During migratory flight, the mass of the gastrointestinal tract (GIT) and its associated organs in small birds decreases in size by as much as 40%, compared with the preflight condition because of the catabolism of protein. At stopover sites, birds need 2-3 days to rebuild their GIT so that they can restore body mass and fat reserves to continue migration. The source of protein used to rebuild ...
متن کاملMultiple Weather Factors Affect Apparent Survival of European Passerine Birds
Weather affects the demography of animals and thus climate change will cause local changes in demographic rates. In birds numerous studies have correlated demographic factors with weather but few of those examined variation in the impacts of weather in different seasons and, in the case of migrants, in different regions. Using capture-recapture models we correlated weather with apparent surviva...
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ژورنال
عنوان ژورنال: Journal of Ornithology
سال: 2017
ISSN: 2193-7192,2193-7206
DOI: 10.1007/s10336-017-1472-5