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By: Martinez, J E - Calvo, José F.Type: ArticleIn: The journal of raptor researchVolume: 35Series:Issue: 3Date: 2001Page Range: 259--262Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Martinez, J E - Calvo, José F.Type: ArticleIn: The journal of raptor researchVolume: 39Series:Issue: 2Date: 2005Page Range: 159--163Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Martinez, J E - Gonzalez, C - Calvo, José F.Type: ArticleIn: The journal of raptor researchVolume: 39Series:Issue: 1Date: 2005Page Range: 92--94Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: