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  1. By: Gauthreaux, Sidney A
    Type: Article
    In: The Wilson bulletin
    Volume: 84
    Issue: 2
    Date: 1972
    Page Range: 136--148
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Russell, Kevin R - Gauthreaux, Sidney A
    Type: Article
    In: The Wilson bulletin
    Volume: 111
    Issue: 3
    Date: 1999
    Page Range: 354--362
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-