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  1. By: Chapin, James P. (James Paul), - Chapin, Ruth T. (Ruth Trimble) - Short, Lester L. - Horne, J F M
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 107
    Date: 1987
    Page Range: 32--35
    Publication Info: London, British Ornithologists' Club, 1893-