Published in Bulletin of The African Bird Club, in 2009, in volume 16, issue 1, pages 23-36
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Published in Bulletin of The African Bird Club, in 2011, in volume 18, issue 1, pages 40-60
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Published in Bulletin of The African Bird Club, in 2000, in volume 7, issue 1, pages 18-28
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Published in Bulletin of The African Bird Club, in 2002, in volume 9, issue 2, pages 122-133
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Published in Bulletin of The African Bird Club, in 2005, in volume 12, issue 2, pages 106-118
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Published in The Auk, in 1887, in volume 4, pages 133-135
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Published in The Auk, in 1893, in volume 10, pages 371-372
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Published in The Auk, in 1902, in volume 19, pages 31-34
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Published in The Auk, in 1897, in volume 14, pages 327
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Published in The Auk, in 1914, in volume 31, pages 104-105
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Published in The Auk, in 1887, in volume 4, pages 205-213
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Published in The Auk, in 1912, in volume 29, pages 399
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Published in The Auk, in 1885, in volume 2, pages 117-120
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Published in The Auk, in 1897, in volume 14, pages 411-412
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Published in The Auk, in 1908, in volume 25, pages 233-235
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Published in The Auk, in 1897, in volume 14, pages 21-32
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Published in The Auk, in 1900, in volume 17, pages 51-58
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Published in The Auk, in 1898, in volume 15, pages 81-114
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Published in The Auk, in 1899, in volume 16, pages 55-74
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Published in The Auk, in 1903, in volume 20, pages 101-159
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Published in The Auk, in 1919, in volume 36, pages 135
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Published in The Auk, in 1919, in volume 36, pages 293
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Published in The Auk, in 1910, in volume 27, pages 53-59
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Published in The Auk, in 1902, in volume 19, pages 402-403
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Published in The Auk, in 1920, in volume 37, pages 140-142
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Published in The Auk, in 1901, in volume 18, pages 68-76
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Published in The Auk, in 1908, in volume 25, pages 327-328
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Published in The Auk, in 1899, in volume 16, pages 187
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Published in The Auk, in 1911, in volume 28, pages 275-276
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Published in The Auk, in 1895, in volume 12, pages 190-191
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Published in The Auk, in 1899, in volume 16, pages 284
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Published in The Auk, in 1893, in volume 10, pages 91-92
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Published in Annals And Magazine of Natural History, in 1856, in volume 18, pages 430
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Published in The Auk, in 1920, in volume 37, pages 307-308
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Published in The Auk, in 1905, in volume 22, pages 88-89
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Published in Novitates Zoologicae, in 1895, in volume 2, pages 61-65
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Published in Ibis, in 1907, in volume 1, issue 2, pages 322-324
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Published in The Auk, in 1904, in volume 21, pages 97-208
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Published in Ibis, in 1921, in volume 3, issue 2, pages 310-316
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Published in The Auk, in 1895, in volume 12, pages 312-314
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Published in Entomologist's Record and Journal of Variation, in 1972, in volume 84, pages 267-268
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Published in The Auk, in 1913, in volume 30, pages 574-576
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Published in Entomologica Americana, in 1885, in volume 1, issue 1, pages 1-2
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Published in Ibis, in 1908, in volume 2, issue 3, pages 486-490
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Published in Ibis, in 1902, in volume 2, issue 2, pages 177-180
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Published in Scopus, in 1977, in volume 1, pages 39-43
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Published in The Auk, in 1896, in volume 13, pages 179-181
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Published in The Auk, in 1889, in volume 6, pages 281-282
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Published in The Auk, in 1889, in volume 6, pages 173
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Published in The Auk, in 1901, in volume 18, pages 135-137
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