Habitat use throughout migration: linking individual consistency, prior breeding success and future breeding potential

摘要: 1. Habitat use can influence individual performance in a wide range of animals, either immediately or through carry-over effects subsequent seasons. Given that many animal species also show consistent differences reproductive success, it seems plausible individuals may have patterns habitat representing specializations, with concomitant fitness consequences. 2. Stable-carbon isotope ratios from tissues were used to discern consistency along terrestrial–aquatic gradient long-distance migrant, the Bewick’s swan (Cygnus columbianus bewickii). These specialisations represented