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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Shapiro, Anne E - Montalbano, Frank - Harrison, Julian R. 3rd - Mager, Doris
    Type: Article
    In: The Wilson bulletin
    Volume: 94
    Issue: 1
    Date: 1982
    Page Range: 55--63
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-