Carryover effects of long-distance avian migration are weaker than effects of breeding environment in a partially migratory bird.

ABSTRACT: Migration may expose individuals to a wide range of increasing anthropogenic threats. In addition to direct mortality effects, this exposure may influence post-migratory reproductive fitness. Partial migration-where a population comprises migrants and residents-represents a powerful opportunity to explore carryover effects of migration. Studies of partial migration in birds typically examine short-distance systems; here we studied an unusual system where residents breed in mixed colonies alongside long-distance trans-Saharan migrants (lesser kestrels (Falco naumanni) in Spain). Combining geolocator data, stable isotope analysis and resighting data, we examined the effects of this stark difference in migratory strategy on body condition, breeding phenology and breeding success. We monitored

SUBMITTER: Buchan C 

PROVIDER: S-EPMC7807013 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature