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By: Carrillo, J. (José) - Nogales, Manuel, Ephraim Hernández, Guillermo Delgado & García - Padron, MType: ArticleIn: The journal of raptor researchVolume: 22Series:Issue: 3Date: 1988Page Range: 85--88Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: