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  1. By: Igl, Lawrence D - Johnson, Douglas H
    Type: Article
    In: The Canadian field-naturalist
    Volume: 121
    Issue: 3
    Date: 2007-07-01
    Page Range: 239--255
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Johnson, Douglas H - Igl, Lawrence D
    Type: Article
    In: The Wilson bulletin
    Volume: 107
    Issue: 4
    Date: 1995
    Page Range: 709--718
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  3. By: Sovada, Marsha A. - Woodward, Robert O. - Igl, Lawrence D
    Type: Article
    In: The Canadian field-naturalist
    Volume: 123
    Issue: 4
    Date: 2009-10-01
    Page Range: 346--367
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  4. By: Bartos, Alisa J. - Sovada, Marsha A. - Igl, Lawrence D - Pietz, Pamela J.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 127
    Issue: 1
    Date: 2013-07-15
    Page Range: 72--75
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  5. By: Igl, Lawrence D - Martin, Ron E.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 116
    Issue: 1
    Date: 2002
    Page Range: 87--97
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  6. By: Igl, Lawrence D
    Type: Article
    In: The Canadian field-naturalist
    Volume: 131
    Issue: 4
    Date: 2018-05-23
    Page Range: 312--316
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  7. By: Igl, Lawrence D - Johnson, Douglas H - Kantrud, Harold A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 113
    Issue: 4
    Date: 1999
    Page Range: 646--651
    Publication Info: Ottawa Ottawa Field-Naturalists' Club