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  1. By: Nelson, Colleen Helgeson
    Type: Article
    In: The Wilson bulletin
    Volume: 88
    Issue: 1
    Date: 1976
    Page Range: 1--3
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Nelson, Colleen Helgeson
    Type: Article
    In: The Canadian field-naturalist
    Volume: 110
    Issue: 2
    Date: 1996
    Page Range: 288--293
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Nelson, Colleen Helgeson
    Type: Article
    In: The Wilson bulletin
    Volume: 88
    Issue: 1
    Date: 1976
    Page Range: 4--15
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-