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  1. By: Whitfield, Douglas W. A. - Gerrard, Jonathan M. - Maher, William J - Davis, D. Wayne
    Type: Article
    In: The Canadian field-naturalist
    Volume: 88
    Issue: 4
    Date: 1974
    Page Range: 399--407
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Hjertaas, Dale G. - Hjertass, Paule - Maher, William J
    Type: Article
    In: The Canadian field-naturalist
    Volume: 102
    Issue: 3
    Date: 1988
    Page Range: 465--470
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Maher, William J
    Type: Article
    In: The Canadian field-naturalist
    Volume: 94
    Issue: 4
    Date: 1980
    Page Range: 405--410
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  4. By: Gerrard, Jonathan M. - Whitfield, Douglas W. A. - Gerrard, Peter - Gerrard, P. Naomi - Maher, William J
    Type: Article
    In: The Canadian field-naturalist
    Volume: 92
    Issue: 4
    Date: 1978
    Page Range: 375--382
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  5. By: Maher, William J
    Type: Article
    In: The Wilson bulletin
    Volume: 82
    Issue: 2
    Date: 1970
    Page Range: 130--157
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-