Great horned and barn owls prey differentially according to the age size of a rodent in northcentral Chile

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dc.contributor.authorCastro, SA
dc.contributor.authorJaksic, FM
dc.date.accessioned2025-01-21T01:34:20Z
dc.date.available2025-01-21T01:34:20Z
dc.date.issued1995
dc.description.abstractBased on cranial measurements we estimated the size- and age-class (juvenile or adult) of leaf-eared mice (Phyllotis darwini) consumed by great horned (Bubo virginianus) and barn owls (Tyto alba) during 1990-92 in a semiarid locality of northcentral Chile. We compared this information to that obtained from mice live-trapped at the same place and period. The frequency distributions of body weights of leaf-eared mice consumed by the two owl species was not statistically different, despite the four-fold difference in body size and different hunting mode of the two owls. In two out of three breeding seasons the owls preyed more frequently on adult mice. In the remaining breeding season and the three wintering seasons they preyed upon adults and juveniles in about the same proportion as they were live-trapped in the field. The higher predation on adult individuals (reproductive) was associated to a greater mobility of adult versus juvenile mice, which may render the former more vulnerable to owl detection.
dc.fuente.origenWOS
dc.identifier.issn0892-1016
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97545
dc.identifier.wosidWOS:A1995TL42400003
dc.issue.numero4
dc.language.isoen
dc.pagina.final249
dc.pagina.inicio245
dc.revistaJournal of raptor research
dc.rightsacceso restringido
dc.subjectBubo virginianus
dc.subjectChile
dc.subjectmediterranean ecosystem
dc.subjectPhyllotis darwini
dc.subjectpredator selectivity
dc.subjectprey vulnerability
dc.subjectTyto alba
dc.subject.ods15 Life on Land
dc.subject.ods13 Climate Action
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa13 Acción por el clima
dc.titleGreat horned and barn owls prey differentially according to the age size of a rodent in northcentral Chile
dc.typeartículo
dc.volumen29
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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