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  1. By: Thompson, Bruce Carlyle, - Schmidt, Maureen E - Calhoun, Stuart W - Morizot, Donald C. - Slack, R Douglas
    Type: Article
    In: The Wilson bulletin
    Volume: 104
    Issue: 2
    Date: 1992
    Page Range: 244--262
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-