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  1. By: Haymes, Gerard T - Blokpoel, Hans,
    Type: Article
    In: The Canadian field-naturalist
    Volume: 92
    Issue: 4
    Date: 1978
    Page Range: 392--395
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Haymes, Gerard T - Blokpoel, Hans,
    Type: Article
    In: The Wilson bulletin
    Volume: 92
    Issue: 2
    Date: 1980
    Page Range: 221--228
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  3. By: Haymes, Gerard T - Sheehan, Ronald W.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 96
    Issue: 2
    Date: 1982
    Page Range: 172--175
    Publication Info: Ottawa Ottawa Field-Naturalists' Club