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  1. By: Drolet, Charles-A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 90
    Issue: 2
    Date: 1976
    Page Range: 123--136
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Drolet, Charles-A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 92
    Issue: 3
    Date: 1978
    Page Range: 275--282
    Publication Info: Ottawa Ottawa Field-Naturalists' Club