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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Marr, N Vern - Edge, W. Daniel - Anthony, Robert G. - Valburg, Ray
    Type: Article
    In: The Wilson bulletin
    Volume: 107
    Issue: 2
    Date: 1995
    Page Range: 251--257
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-