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  1. By: Gavin, Angus
    Type: Article
    In: The Wilson bulletin
    Volume: 59
    Issue: 4
    Date: 1947
    Page Range: 195--203
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Gavin, Angus
    Type: Article
    In: The Canadian field-naturalist
    Volume: 62
    Issue: 1
    Date: 1948
    Page Range: 44--44
    Publication Info: Ottawa Ottawa Field-Naturalists' Club