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  1. By: Bagg, Aaron M - Gunn, William W H - Miller, D S - Nichols, John T. (John Treadwell), - Smith, Winnifred - Wolfarth, F. P.
    Type: Article
    In: The Wilson bulletin
    Volume: 62
    Issue: 1
    Date: 1950
    Page Range: 5--19
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Smith, Winnifred
    Type: Article
    In: The Canadian field-naturalist
    Volume: 78
    Issue: 1
    Date: 1964
    Page Range: 59--60
    Publication Info: Ottawa Ottawa Field-Naturalists' Club