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  1. By: Mayfield, Harold F
    Type: Article
    In: The Wilson bulletin
    Volume: 64
    Issue: 3
    Date: 1952
    Page Range: 186--192
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Mayfield, Harold F
    Type: Article
    In: The Wilson bulletin
    Volume: 87
    Issue: 4
    Date: 1975
    Page Range: 456--466
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-