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  1. By: Morris, Ralph D
    Type: Article
    In: The Canadian field-naturalist
    Volume: 82
    Issue: 2
    Date: 1968
    Page Range: 84--87
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Morris, Ralph D - Hunter, Rodger A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 90
    Issue: 2
    Date: 1976
    Page Range: 137--143
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Brown, Kevin M. - Morris, Ralph D
    Type: Article
    In: The Wilson bulletin
    Volume: 107
    Issue: 1
    Date: 1995
    Page Range: 140--152
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  4. By: Morris, Ralph D
    Type: Article
    In: The Canadian field-naturalist
    Volume: 81
    Issue: 3
    Date: 1967
    Page Range: 225--226
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  5. By: Morris, Ralph D - Wiggins, David A
    Type: Article
    In: The Wilson bulletin
    Volume: 98
    Issue: 1
    Date: 1986
    Page Range: 101--109
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-