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  1. By: Churchill, John B - Wood, Petra Bohall - Brinker, David F
    Type: Article
    In: The Wilson bulletin
    Volume: 112
    Issue: 3
    Date: 2000
    Page Range: 332--336
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Churchill, John B - Wood, Petra Bohall - Brinker, David F
    Type: Article
    In: The Wilson bulletin
    Volume: 114
    Issue: 3
    Date: 2002
    Page Range: 309--313
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-