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  1. By: Cameron, Raymond D. - Whitten, Kenneth R. - Smith, Walter T. - Roby, Daniel D
    Type: Article
    In: The Canadian field-naturalist
    Volume: 93
    Issue: 2
    Date: 1979
    Page Range: 155--162
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Roby, Daniel D - Brink, Karen L. - Wittmann, Karin
    Type: Article
    In: The Wilson bulletin
    Volume: 104
    Issue: 4
    Date: 1992
    Page Range: 630--643
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  3. By: Asch, Andreas - Roby, Daniel D
    Type: Article
    In: The Wilson bulletin
    Volume: 107
    Issue: 2
    Date: 1995
    Page Range: 306--316
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-