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  1. By: Ricklefs, Robert E
    Type: Article
    In: The Wilson bulletin
    Volume: 78
    Issue: 1
    Date: 1966
    Page Range: 47--56
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Ricklefs, Robert E
    Type: Article
    In: The Wilson bulletin
    Volume: 116
    Issue: 2
    Date: 2004
    Page Range: 119--133
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  3. By: Ricklefs, Robert E
    Type: Article
    In: Journal of the New York Entomological Society
    Volume: 83
    Date: 1975
    Page Range: 19--32
    Publication Info: Lawrence, Kan Allen Press [etc.]