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By: Casado, Eva - Ferrer, Miguel (Ornithologist)Type: ArticleIn: The journal of raptor researchVolume: 39Series:Issue: 2Date: 2005Page Range: 168--173Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Ferrer, Miguel (Ornithologist)Type: ArticleIn: The journal of raptor researchVolume: 24Series:Issue: 4Date: 1990Page Range: 77--79Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Balbontin, J - Ferrer, Miguel (Ornithologist)Type: ArticleIn: The journal of raptor researchVolume: 36Series:Issue: 3Date: 2002Page Range: 231--235Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Viñuela, Javier - Ferrer, Miguel (Ornithologist)Type: ArticleIn: The Wilson bulletinVolume: 109Series:Issue: 1Date: 1997Page Range: 92--101Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Balbontin, J - Ferrer, Miguel (Ornithologist) - Casado, EvaType: ArticleIn: The journal of raptor researchVolume: 35Series:Issue: 1Date: 2001Page Range: 20--23Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Janss, G F E - Lazo, A - Ferrer, Miguel (Ornithologist)Type: ArticleIn: The journal of raptor researchVolume: 33Series:Issue: 2Date: 1999Page Range: 154--159Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: