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Home range variability and philopatry in Cinereous vultures(Aegypius monachus)breeding in Iberia

Avian Research 2023年第4期14卷 586-592页

作者： Jorge García-Mací Ernesto Alvarez Manuel Galan Juan Jose Iglesias-Lebrija Marc Galvez Gerard Plana Núria Vallverdú Vicente Urios Grupo de Investigacion Zoología de Vertebrados Universidad de AlicanteApdo.99E-03080AlicanteSpain GREFA(Grupo de Rehabilitacion de la Fauna Autoctonay su Habitat) C/Monte del Pilar S/NE-28220MajadahondaSpain cos d’agents rurals de la generalitat de catalunya Spain Associacio Trenca LleidaSpain

large scavengers are strongly dependent on environmental conditions and carrion distribution and abundance,so season and breeding-related factors may influence the spatial ecology of species such as the Cinereous Vulture(Aegypius monachus),the largest European *** holds one of the biggest populations worldwide,but some aspects of the spatial ecology of the species in this region remain *** this study,17 adult Cinereous Vultures were GPS-tracked in order to study their spatial ecology during the adult *** average monthly home ranges(95%Kernel density Estimation,Kde)and core areas(50%Kde)were 6543±19,935 km^(2)and 1174±4004 km^(2),*** average monthly home range fidelity ranged between 50 and 73%.differences in movement-related variables between the seasonal periods(incubation,chick-rearing and non-breeding)were *** the chick-rearing period,the monthly accumulated distance was higher than during the other periods:3316±1108(chick-rearing)vs.1621±622(incubation)vs.1726±1159 km per month(nonbreeding).Additionally,large home range sizes were more frequent during the chick-rearing *** are two likely causes for these seasonal ***,chick-rearing entails a higher energetic expenditure by the parental individuals in foraging activities,so larger movements and foraging areas are expected during this ***,the flight is favoured during spring and summer due to environmental *** chick-rearing and warm months is a great evolutionary advantage for soaring-gliding raptors,as it allows them to cover larger areas with low energy ***,six individuals tagged as nestlings highlight the philopatric behaviour of the species:vultures settle their breeding areas 54±51 km from their natal nest(range=9–138 km).

关键词： Bird of prey Movement ecology Philopatry Raptor Scavenger

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