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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Avery, Michael L. - Goocher, Kelly J - Cone, Marcia A
    Type: Article
    In: The Wilson bulletin
    Volume: 105
    Issue: 4
    Date: 1993
    Page Range: 604--611
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-