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  1. By: Thumser, Nina N - Karron, Jeffrey D - Ficken, Millicent S. (Millicent Sigler)
    Type: Article
    In: The Wilson bulletin
    Volume: 108
    Issue: 1
    Date: 1996
    Page Range: 72--79
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-