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  1. By: Vanderwerf, Eric A.,
    Type: Article
    In: The Wilson bulletin
    Volume: 115
    Issue: 3
    Date: 2003
    Page Range: 258--262
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Lees, Alexander C - Vanderwerf, Eric A.,
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 131
    Issue: 3
    Date: 2011
    Page Range: 212--217
    Publication Info: London, British Ornithologists' Club, 1893-
  3. By: Miller, Edward H - Vanderwerf, Eric A., - Mcpherson, Les
    Type: Article
    In: The Wilson bulletin
    Volume: 115
    Issue: 4
    Date: 2003
    Page Range: 455--463
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-