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  1. By: Keats, D. W. - Hooper, Robert G - Steele, Donald H. - South, G R
    Type: Article
    In: The Canadian field-naturalist
    Volume: 101
    Issue: 3
    Date: 1997
    Page Range: 463--465
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Hooper, Robert G
    Type: Article
    In: The Wilson bulletin
    Volume: 89
    Issue: 2
    Date: 1977
    Page Range: 233--242
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  3. By: Sargent, Philip S. - Methven, David A. - Hooper, Robert G - McKenzie, Cynthia
    Type: Article
    In: The Canadian field-naturalist
    Volume: 122
    Issue: 4
    Date: 2008-10-01
    Page Range: 338--344
    Publication Info: Ottawa Ottawa Field-Naturalists' Club