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  1. By: Cavanagh, Paul M.
    Type: Article
    In: The journal of raptor research
    Volume: 24
    Issue: 3
    Date: 1990
    Page Range: 68--69
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  2. By: Cavanagh, Paul M. - Griffin, Curtice R
    Type: Article
    In: The Wilson bulletin
    Volume: 105
    Issue: 2
    Date: 1993
    Page Range: 333--338
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  3. By: Cavanagh, Paul M. - Ritchison, Gary
    Type: Article
    In: The Wilson bulletin
    Volume: 99
    Issue: 4
    Date: 1987
    Page Range: 620--627
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  4. By: Ritchison, G - Cavanagh, Paul M.
    Type: Article
    In: The journal of raptor research
    Volume: 26
    Issue: 2
    Date: 1992
    Page Range: 66--73
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-