Explotacion del recurso trofico por la lechuza de los campanarios (Tyto alba) en el oeste de Chubut, Argentina

de Santis, L.J.; Basso, N.G.; Noriega, J.I.; Grossman, M.F.

Studies on Neotropical Fauna and Environment 29(1): 43-47

1994


ISSN/ISBN: 0165-0521
Accession: 021012762

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Summary
Food habits of the Barn Owl (Tyro alba) were studied at a Cis-Andean Locality near Trevelin, Chubut, Argentina. Three hundred and three prey items in 107 pellets were analysed. Rodents were predominant, mainly those from the Patagonian steppe, i.e. Reithrodon auritus (30.6%), Eligmodontia typus (29.3%), and Oryzomys longicaudatus (18.4%). Frogs and birds were represented at low rates- Tyto alba is considered a rodent specialist with a widely foraging trophic strategy in open areas.