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  1. By: Haines, Aaron M - Mcgrady, Mike J - Martell, Mark S - Dayton, B James - Henke, M Blake - Seegar, William S
    Type: Article
    In: The Wilson bulletin
    Volume: 115
    Issue: 2
    Date: 2003
    Page Range: 166--169
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Martell, Mark S - Schladweiler, John - Cuthbert, Francesca J. (Francesca Jean)
    Type: Article
    In: The journal of raptor research
    Volume: 35
    Issue: 4
    Date: 2001
    Page Range: 331--336
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-