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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Segrè, Amelia - Hailman, Jack P - Beer, C. G.
    Type: Article
    In: The Wilson bulletin
    Volume: 80
    Issue: 2
    Date: 1968
    Page Range: 213--219
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-