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  1. By: Sheaffer, Susan E. - Malecki, Richard A. - Swift, Bryan L - Dunn, John - Scribner, Kim
    Type: Article
    In: The Canadian field-naturalist
    Volume: 121
    Issue: 3
    Date: 2007-07-01
    Page Range: 313--320
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Swift, Bryan L - Larson, Joseph S - DeGraaf, Richard M.
    Type: Article
    In: The Wilson bulletin
    Volume: 96
    Issue: 1
    Date: 1984
    Page Range: 48--59
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-