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  1. By: Marti, Carl D - Kochert, Michael N
    Type: Article
    In: The Wilson bulletin.
    Volume: 107
    Issue: 4
    Date: 1995
    Page Range: 615--628
    Publication info: Columbus, Ohio :Wilson Ornithological Society,1894-
  2. By: Engel, Kathleen A - Young, Leonard S - Steenhof, Karen - Roppe, Jerry A - Kochert, Michael N
    Type: Article
    In: The Wilson bulletin.
    Volume: 104
    Issue: 1
    Date: 1992
    Page Range: 105--121
    Publication info: Columbus, Ohio :Wilson Ornithological Society,1894-
  3. By: Kochert, Michael N - Olendorff, R R
    Type: Article
    In: The journal of raptor research.
    Volume: 33
    Issue: 1
    Date: 1999
    Page Range: 39--42
    Publication info: Hastings, Minn. :Raptor Research Foundation,©1987-
  4. By: Lehman, R N - Steenhof, K - Carpenter, L B - Kochert, Michael N
    Type: Article
    In: The journal of raptor research.
    Volume: 34
    Issue: 4
    Date: 2000
    Page Range: 262--269
    Publication info: Hastings, Minn. :Raptor Research Foundation,©1987-