Philopatry, natal dispersal, first settlement and age of first breeding of bearded vultures Gypaetus barbatus in central Pyrenees

摘要

Capsule Male bearded vultures tended to disperse closer to natal territories than females with a preferred eastward natal dispersal direction. In general, birds settled for the first time in breeding territories at an average age of 7.6 years, first breeding attempt occurred at 10.0 years and first successful breeding at 10.4 years. Measures aimed at favouring the settlement of new pairs in the edge of their current distribution area would allow natural range expansion of this endangered species.