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  1. By: Mclaren, William D
    Type: Article
    In: The Canadian field-naturalist
    Volume: 83
    Issue: 1
    Date: 1969
    Page Range: 59--60
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Erskine, Anthony J - Mclaren, William D
    Type: Article
    In: The Wilson bulletin
    Volume: 88
    Issue: 4
    Date: 1976
    Page Range: 611--620
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-