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  1. By: Jahn, Laurence R - Clement, Roland C - Dykstra, Walter W - Mccabe, Robert A - Poole, Daniel A - Rudd, Robert L
    Type: Article
    In: The Wilson bulletin
    Volume: 75
    Issue: 3
    Date: 1963
    Page Range: 295--325
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Clement, Roland C - Dykstra, Walter W - Poole, Daniel A
    Type: Article
    In: The Wilson bulletin
    Volume: 76
    Issue: 3
    Date: 1964
    Page Range: 306--312
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-