dcsimg
Please read BHL's Acknowledgment of Harmful Content
Sort By:
  1. By: Clark, William S. - Duffy, Katharine - Gorney, Edna - Mcgrady, M - Schultz, C
    Type: Article
    In: The journal of raptor research
    Volume: 22
    Issue: 2
    Date: 1988
    Page Range: 53--58
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  2. By: Duffy, Katharine - Kerlinger, Paul
    Type: Article
    In: The Wilson bulletin
    Volume: 104
    Issue: 2
    Date: 1992
    Page Range: 312--320
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  3. By: Garber, Christopher S. - Wallen, Richard L. - Duffy, Katharine
    Type: Article
    In: The journal of raptor research
    Volume: 25
    Issue: 4
    Date: 1991
    Page Range: 120--122
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-