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  1. By: Nicholson, E M
    Type: Article
    In: The Emu : official organ of the Australasian Ornithologists' Union
    Volume: 27
    Issue: 3
    Date: 1928-01-01
    Page Range: 162--162
    Publication Info: Melbourne Royal Australasian Ornithologists Union 1901-
  2. By: Nicholson, E M
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 100
    Date: 1980
    Page Range: 44--47
    Publication Info: London, British Ornithologists' Club, 1893-