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  1. By: Conner, Richard N - Dickson, James G - Locke, Brian A - Segelquist, Charles A
    Type: Article
    In: The Wilson bulletin
    Volume: 95
    Issue: 3
    Date: 1983
    Page Range: 349--361
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Dickson, James G - Noble, Robert E
    Type: Article
    In: The Wilson bulletin
    Volume: 90
    Issue: 1
    Date: 1978
    Page Range: 19--30
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-