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By: Ryan, Mark R - Renken, Rochelle BType: ArticleIn: The Wilson bulletinVolume: 99Series:Issue: 2Date: 1987Page Range: 175--189Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: North, Michael R - Ryan, Mark RType: ArticleIn: The Canadian field-naturalistVolume: 102Series:Issue: 3Date: 1988Page Range: 485--490Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: North, Michael R - Ryan, Mark RType: ArticleIn: The Canadian field-naturalistVolume: 102Series:Issue: 1Date: 1988Page Range: 69--70Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: