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  1. By: Walters, Michael, - Russell, Douglas G D - Steinheimer, Frank D - Quaisser, Christiane
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 127
    Date: 2007
    Page Range: 226--227
    Publication Info: London, British Ornithologists' Club, 1893-
  2. By: Maurer, Golo - Russell, Douglas G D - Woog, Friederike - Cassey, Phillip
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 130
    Date: 2010
    Page Range: 208--214
    Publication Info: London, British Ornithologists' Club, 1893-
  3. By: Russell, Douglas G D - Wright, Sheila
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 134
    Issue: 4
    Date: 2014
    Page Range: 286--290
    Publication Info: London, British Ornithologists' Club, 1893-