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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Bray, Olin E - Kennelly, James J - Guarino, Joseph L
    Type: Article
    In: The Wilson bulletin
    Volume: 87
    Issue: 2
    Date: 1975
    Page Range: 187--195
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-