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  1. By: Whiklo, Todd M. - Duncan, James R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 128
    Issue: 1
    Date: 2014-03-26
    Page Range: 38--43
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Duncan, James R.
    Type: Article
    In: The journal of raptor research
    Volume: 31
    Issue: 2
    Date: 1997
    Page Range: 160--166
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  3. By: Duncan, James R. - Lane, P A
    Type: Article
    In: The journal of raptor research
    Volume: 22
    Issue: 3
    Date: 1988
    Page Range: 93--93
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  4. By: Duncan, James R.
    Type: Article
    In: The journal of raptor research
    Volume: 25
    Issue: 4
    Date: 1991
    Page Range: 146--146
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  5. By: Wright, Jonathan D. - Galloway, Terry G - Duncan, James R. - Cook, Francis R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 130
    Issue: 4
    Date: 2017-03-29
    Page Range: 355--358
    Publication Info: Ottawa Ottawa Field-Naturalists' Club