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By: De Solla, S R - Martin, P A - Ewins, P J - Barker, Michael E.Type: ArticleIn: The journal of raptor researchVolume: 37Series:Issue: 4Date: 2003Page Range: 307--314Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Martin, Pamela A. - De Solla, Shane R. - Ewins, Peter J. - Barker, Michael E.Type: ArticleIn: The Canadian field-naturalistVolume: 119Series:Issue: 1Date: 2005-01-01Page Range: 58--63Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: