Published in Journal für Ornithologie, in 1920, in volume 68, pages 403-405
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Published in Journal für Ornithologie, in 1920, in volume 68, pages 96
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Published in Journal für Ornithologie, in 1921, in volume 69, pages 466-468
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Published in Journal für Ornithologie, in 1921, in volume 69, pages 266-268
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Published in Journal für Ornithologie, in 1916, in volume 64, pages 427-428
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Published in Journal für Ornithologie, in 1913, in volume 61, pages 404-408
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Published in Journal für Ornithologie, in 1895, in volume 43, pages 111-112
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Published in Journal für Ornithologie, in 1896, in volume 44, pages 367-368
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Published in Journal für Ornithologie, in 1897, in volume 45, pages 104
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Published in Journal für Ornithologie, in 1899, in volume 47, pages 419-420
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Published in Journal für Ornithologie, in 1898, in volume 46, pages 315-316
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Published in Journal für Ornithologie, in 1901, in volume 49, pages 467-468
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Published in Journal für Ornithologie, in 1903, in volume 51, pages 309-312
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Published in Journal für Ornithologie, in 1895, in volume 43, pages 255-256
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Published in Journal für Ornithologie, in 1897, in volume 45, pages 197-200
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Published in Journal für Ornithologie, in 1899, in volume 47, pages 533-535
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Published in Journal für Ornithologie, in 1901, in volume 49, pages 383-384
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Published in Journal für Ornithologie, in 1902, in volume 50, pages 473-475
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Published in Journal für Ornithologie, in 1895, in volume 43, pages 358-360
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Published in Journal für Ornithologie, in 1896, in volume 44, pages 98-100
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Published in Journal für Ornithologie, in 1904, in volume 52, pages 316-319
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Published in Journal für Ornithologie, in 1904, in volume 52, pages 455-456
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Published in Journal für Ornithologie, in 1907, in volume 55, pages 624-627
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Published in Journal für Ornithologie, in 1908, in volume 56, pages 489-491
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Published in Journal für Ornithologie, in 1910, in volume 58, pages 815-817
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Published in Journal für Ornithologie, in 1910, in volume 58, pages 678-680
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Published in Journal für Ornithologie, in 1912, in volume 60, pages 129-132
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Published in Journal für Ornithologie, in 1912, in volume 60, pages 500
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Published in Journal für Ornithologie, in 1911, in volume 59, pages 526-527
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Published in Journal für Ornithologie, in 1906, in volume 54, pages 559-561
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Published in Journal für Ornithologie, in 1907, in volume 55, pages 476-480
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Published in Journal für Ornithologie, in 1914, in volume 62, pages 178-179
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Published in Journal für Ornithologie, in 1905, in volume 53, pages 429-431
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Published in Journal für Ornithologie, in 1909, in volume 57, pages 591-596
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Published in Journal für Ornithologie, in 1912, in volume 60, pages 322-324
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Published in Journal für Ornithologie, in 1911, in volume 59, pages 356-359
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Published in Journal für Ornithologie, in 1912, in volume 60, pages 630-632
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Published in Journal für Ornithologie, in 1894, in volume 42, pages 350
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Published in Journal für Ornithologie, in 1917, in volume 65, pages 519
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Published in Journal für Ornithologie, in 1894, in volume 42, pages 110-112
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Published in Journal für Ornithologie, in 1913, in volume 61, pages 661-663
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Published in Journal für Ornithologie, in 1917, in volume 65, pages 395-396
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Published in Journal für Ornithologie, in 1916, in volume 64, pages 612-614
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Published in Journal für Ornithologie, in 1918, in volume 66, pages 439-440
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Published in Journal für Ornithologie, in 1894, in volume 42, pages 444-445
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Published in Journal für Ornithologie, in 1917, in volume 65, pages 240
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Published in Journal für Ornithologie, in 1918, in volume 66, pages 118-120
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Published in Journal für Ornithologie, in 1899, in volume 47, pages 123-124
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Published in Journal für Ornithologie, in 1898, in volume 46, pages 578-579
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Published in Journal für Ornithologie, in 1897, in volume 45, pages 362-364
Created: 2014-09-04, modified: 2014-09-04