The historical extirpation of the bearded vultureGypaetus barbatusin the western Alps (France ‐ Italy): Modelling the impact of human persecution

Abstract

Abstract Human persecution may have been the major cause of extirpation of the bearded vulture Gypaetus barbatus in the western Alps around 1920–1930. However, as shown in a previous work (Mingozzi & Esteve, 1996), historical information by itself is insufficient to uphold this hypothesis because the real extent of the shooting pressure endured by the species is not ascertainable. The aim of this paper was to test whether the rapid population decline (30–40 years) shown by historical data is consistent with human persecution. By making assumptions about hypothetical population size and natural survival rates, we tried to assess what rate of additional adult mortality caused by human impact would eventually have led to extirpation. The size of our hypothetical population was estimated by comparison between the current population size (number of breeding pairs) of the golden eagle Aquila chrysaetos in the Pyrenees and in the western Alps. All the life‐history parameters available in the recent European lite...