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By: Navarro, J - Minguez, E - Garcia, D - Villacorta, Carlos - Botella, Francisco - Sánchez-Zapata, José Antonio - Carrete, Martina - Giménez, AndrésType: ArticleIn: The journal of raptor researchVolume: 39Series:Issue: 4Date: 2005Page Range: 454--457Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: