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By: Silva, S I - Lazo, I - Silvaaranguiz, E - Jaksić, F. M. (Fabian Miguel), - Meserve, P L - Gutiérrez, Julio R.,Type: ArticleIn: The journal of raptor researchVolume: 29Series:Issue: 4Date: 1995Page Range: 250--255Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: