Published in Ibis, in 1879, in volume 3, issue 1, pages 84-86

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Published in Journal für Ornithologie, in 1889, in volume 37, pages 113-120

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Published in Journal für Ornithologie, in 1867, in volume 15, pages 36-37

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Published in Journal für Ornithologie, in 1872, in volume 20, pages 225-230

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Published in Journal für Ornithologie, in 1863, in volume 11, pages 228-229

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Published in Journal für Ornithologie, in 1854, in volume 2, pages 97-128

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Published in Journal für Ornithologie, in 1860, in volume 8, pages 81-112

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Published in Journal für Ornithologie, in 1860, in volume 8, pages 161-180

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Published in Journal für Ornithologie, in 1854, in volume 2, pages 289-308

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Published in Journal für Ornithologie, in 1854, in volume 2, pages 193-218

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Published in Journal für Ornithologie, in 1860, in volume 8, pages 1-16

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Published in Journal für Ornithologie, in 1883, in volume 31, pages 257-286

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Published in Ibis, in 1874, in volume 4, issue 2, pages 166-167

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Published in Proceedings of The Zoological Society of London, in 1869, in volume 1869, pages 433-436

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Published in Journal für Ornithologie, in 1865, in volume 13, pages 1-30

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Published in Journal für Ornithologie, in 1858, in volume 6, pages 445

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Published in Ibis, in 1861, in volume 3, issue 4, pages 321-328

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Published in Journal für Ornithologie, in 1860, in volume 8, pages 340-341

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Published in Journal für Ornithologie, in 1879, in volume 27, pages 187-194

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Published in Journal für Ornithologie, in 1863, in volume 11, pages 219-223

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Published in Journal für Ornithologie, in 1864, in volume 12, pages 435-446

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Published in Journal für Ornithologie, in 1887, in volume 35, pages 310-311

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Published in Journal für Ornithologie, in 1865, in volume 13, pages 153-173

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Published in Journal für Ornithologie, in 1882, in volume 30, pages 321-329

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Published in Journal für Ornithologie, in 1861, in volume 9, pages 257-276

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Published in Journal für Ornithologie, in 1883, in volume 31, pages 425-426

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Published in Journal für Ornithologie, in 1861, in volume 9, pages 161-176

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Published in Journal für Ornithologie, in 1865, in volume 13, pages 97

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Published in Ibis, in 1892, in volume 4, issue 3, pages 373-374

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Published in Ibis, in 1886, in volume 4, issue 2, pages 105-112

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Published in Ibis, in 1862, in volume 4, issue 2, pages 143-149

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Published in Ibis, in 1877, in volume 1, issue 3, pages 334-336

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Published in Ibis, in 1901, in volume 1, issue 2, pages 347-353

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Published in Journal für Ornithologie, in 1890, in volume 38, pages 150-154

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Published in Proceedings of The Zoological Society of London, in 1885, in volume 1885, pages 613-615

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Published in Proceedings of The Zoological Society of London, in 1884, in volume 1884, pages 415-417

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Published in Revue et magasin de zoologie pure et appliquée, in 1849, in volume 1, pages 494-498

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Published in Proceedings of The Zoological Society of London, in 1862, in volume 1862, pages 152-153

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Published in Annals And Magazine of Natural History, in 1857, in volume 20, pages 136-138

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Published in Annals And Magazine of Natural History, in 1863, in volume 12, pages 168

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Published in Ibis, in 1884, in volume 2, issue 1, pages 28-30

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Published in Proceedings of The Biological Society of Washington, in 1981, in volume 94, pages 240-253

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Published in Journal für Ornithologie, in 1863, in volume 11, pages 132-135

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Published in Journal für Ornithologie, in 1880, in volume 28, pages 210-214

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Published in Proceedings of The Zoological Society of London, in 1879, in volume 1879, pages 295-296

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Published in Proceedings of The Zoological Society of London, in 1869, in volume 1869, pages 544-548

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Published in Journal für Ornithologie, in 1901, in volume 49, pages 337-359

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Published in Proceedings of the Zoological Society of London, in 1871, in volume 1871, pages 21-32

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Published in Journal für Ornithologie, in 1888, in volume 36, pages 4-5

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Published in Journal für Ornithologie, in 1902, in volume 50, pages 349-356

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