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

作　　者：Jorge García-Mací Ernesto Alvarez Manuel Galan Juan Jose Iglesias-Lebrija Marc Galvez Gerard Plana Núria Vallverdú Vicente Urios 

机构地区：[1]Grupo de Investigacion Zoología de Vertebrados,Universidad de Alicante,Apdo.99,E-03080,Alicante,Spain [2]GREFA(Grupo de Rehabilitacion de la Fauna Autoctonay su Habitat),C/Monte del Pilar S/N,E-28220,Majadahonda,Spain [3]Cos d’Agents Rurals de la Generalitat de Catalunya,Spain [4]Associacio Trenca,Lleida,Spain

出　　处：《Avian Research》2023年第4期586-592,共7页鸟类学研究（英文版）

基　　金：Iberdrola Espana Foundation(MIGRA program of SEO/Bird Life);Asociación Trenca;Generalitat de Catalunya;Junta de Extremadura;GREFA(supported by REDEIA, MITERD, Junta de Castilla y León, Junta de Comunidades de Castilla la Mancha, and Comunidad de Madrid);Cabaneros National Park;Sierra de Guadarrama National Park

摘　　要：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 raptor.Iberia holds one of the biggest populations worldwide,but some aspects of the spatial ecology of the species in this region remain unknown.In this study,17 adult Cinereous Vultures were GPS-tracked in order to study their spatial ecology during the adult phase.The 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),respectively.The 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 found.During 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 period.There are two likely causes for these seasonal differences.Firstly,chick-rearing entails a higher energetic expenditure by the parental individuals in foraging activities,so larger movements and foraging areas are expected during this period.Secondly,the flight is favoured during spring and summer due to environmental conditions.Matching 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 expenditure.Furthermore,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 

分 类 号：Q958.1[生物学—动物学]