Natal dispersal and recruitment of two Bonelli's Eagles Aquila fasciata: a four-year satellite tracking study

Autor:	Pascual López-López, Alvaro Soutullo, Vicente Urios, Luis Cadahía, Juan J. Negro
Rok vydání:	2009
Předmět:	Eagle education.field_of_study geography.geographical_feature_category biology Ecology Population Satellite tracking biology.organism_classification Gene flow Geography Bonelli's eagle Peninsula biology.animal Biological dispersal Animal Science and Zoology Philopatry education
Zdroj:	Acta Ornithologica. 44:193-198
ISSN:	1734-8471 0001-6454
DOI:	10.3161/000164509x482777
Popis:	To study natal dispersal and recruitment to the breeding population in Bonelli's Eagle, two nestlings were tagged with satellite transmitters in the Iberian Peninsula in 2002. Their monthly ranges and distances were computed and fitted to regression models to describe their general trend. One bird, a female, dispersed and settled rapidly in an area which she explored intensively during four years and which finally became her first breeding site. The natal dis- persal distance was 441 km, and the bird cannot therefore be considered philopatric. The other bird, a male, alternated between long travelling episodes and settlement in particular areas, exploring different regions both distant from and close to his natal territory, but no breeding attempt could be confirmed after four years of tracking. The large distances we recorded confirm the potential for gene flow among populations but, in comparison with our results from previous studies, they suggest that Bonelli's Eagles may show high variation in their natal dispersal distances and use different dispersal strategies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ed10398ea712ee81f51d5b550a81ee41 https://doi.org/10.3161/000164509x482777 Zobrazit plný text záznamu