Philip Lutley Sclater, "On the general geographical distribution of the members of the class Aves", Journal of the Proceedings of the Linnean Society : Zoology Vol.II, Longman, Brown, Green, Longmans & Roberts, and Williams and Norgate, London, 1858, p.130-145.
Alfred Russel Wallace, The geographical distribution of animals : With a study of the relations of living and extinct faunas as elucidating the past changes of the earth's surface, Vol.I & Vol.II, Macmillan and Co, London - Harper & brothers, New York, 1876.
