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  1. By: Comins, Derek M.
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 84
    Date: 1964
    Page Range: 141--142
    Publication Info: London, British Ornithologists' Club, 1893-
  2. By: Comins, Derek M.
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 81
    Date: 1961
    Page Range: 111--112
    Publication Info: London, British Ornithologists' Club, 1893-