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  1. By: Peres, Carlos A - Whittaker, Andrew, (Ornithologist)
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 111
    Date: 1991
    Page Range: 156--171
    Publication Info: London, British Ornithologists' Club, 1893-
  2. By: Lees, Alexander C - Peres, Carlos A
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 128
    Date: 2008
    Page Range: 68--69
    Publication Info: London, British Ornithologists' Club, 1893-