Published in Bull Brit Ornithol Club, in 1960, in volume 80, pages 18-21
Created: 2012-12-03, modified: 2012-12-03
Published in Bulletin of The British Ornithologists' Club, in 1963, in volume 83, pages 25-29
Created: 2012-12-03, modified: 2012-12-03
Published in Bulletin of The British Ornithologists' Club, in 1968, in volume 88, pages 30-31
Created: 2012-12-03, modified: 2012-12-03
Published in Bulletin of The British Ornithologists' Club, in 1967, in volume 87, pages 63
Created: 2012-12-03, modified: 2012-12-03
Published in Bulletin of The British Ornithologists' Club, in 1962, in volume 82, pages 72-75
Created: 2012-12-03, modified: 2012-12-03
Published in Bulletin of The British Ornithologists' Club, in 1967, in volume 87, pages 167-168
Created: 2012-12-03, modified: 2012-12-03
Published in Bulletin of The British Ornithologists' Club, in 1967, in volume 87, pages 111
Created: 2012-12-03, modified: 2012-12-03
Published in Bulletin of The British Ornithologists' Club, in 1966, in volume 86, pages 143-144
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Published in Bulletin of The British Ornithologists' Club, in 1943, in volume 63, pages 63-64
Created: 2013-01-29, modified: 2015-05-01
Published in Bulletin of The British Ornithologists' Club, in 1967, in volume 87, pages 61
Created: 2012-12-03, modified: 2012-12-03
Published in Bulletin of The British Ornithologists' Club, in 1967, in volume 87, pages 62-63
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Published in Austrobaileya, in 1989, in volume 3, pages 163-165
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Published in Annals of the Cape Provincial Museums, in 1962, in volume 2, pages 155-189
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Published in Rhodora, in 1919, in volume 21, issue 249, pages 171
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Published in Pan-Pacific Entomologist, in 1987, in volume 63, issue 4, pages 341-345
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Published in Bulletin of The British Ornithologists' Club, in 2009, in volume 129, issue 4, pages 222-228
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Published in Madroño, in 1953, in volume 12, issue 3, pages 81-89
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Published in Journal of The Bombay Natural History Society, in 1982, in volume 79, issue 2, pages 404-407
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Published in Torreya, in 1931, in volume 31, issue 6, pages 161-168
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Published in Journal of Raptor Research, in 1988, in volume 22, issue 2, pages 37-43
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Published in Journal of Raptor Research, in 2004, in volume 38, issue 2, pages 158-160
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Published in The Wilson Bulletin, in 1979, in volume 91, issue 2, pages 279-287
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Published in The Auk, in 1911, in volume 28, pages 113
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Published in Rhodora, in 1925, in volume 27, issue 315, pages 52
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Published in Rhodora, in 1919, in volume 21, issue 248, pages 148
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Published in Journal of The Bombay Natural History Society, in 1988, in volume 85, issue 2, pages 271-280
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Published in Torreya, in 1941, in volume 41, issue 6, pages 201-206
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Published in Contributions In Science (Los Angeles), in 1985, in volume 368, pages 1-20
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Published in The Auk, in 1915, in volume 32, pages 204-207
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Published in Nautilis, in 1903, in volume 17, pages 38-39
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Published in Notes From The Leyden Museum, in 1905, in volume 25, issue 4, pages 239-247
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Published in Proceedings of The Biological Society of Washington, in 1906, in volume 19, pages 121-125
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Published in Journal of Raptor Research, in 2004, in volume 38, issue 2, pages 191
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Published in Revue Suisse De Zoologie, in 1986, in volume 93, pages 237-246
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Published in Rhodora, in 2004, in volume 106, issue 927, pages 273-286
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