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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Koford, Rolf R - Dunning, John B - Ribic, Christine A - Finch, Deborah M.
    Type: Article
    In: The Wilson bulletin
    Volume: 106
    Issue: 1
    Date: 1994
    Page Range: 121--137
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-