Published in Journal of Raptor Research, in 2000, in volume 34, issue 2, pages 133-136
Created: 2017-04-07, modified: 2017-04-07
Published in Journal of Raptor Research, in 1990, in volume 24, issue 3, pages 59-63
Created: 2017-04-07, modified: 2017-04-07
Published in Proceedings of The Biological Society of Washington, in 1988, in volume 101, pages 308
Created: 2011-06-10, modified: 2011-06-21
Published in Rhodora, in 1902, in volume 4, issue 47, pages 217
Created: 2016-07-19, modified: 2016-07-19
Published in Proceedings of The Biological Society of Washington, in 1989, in volume 102, pages 738-741
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Published in The Auk, in 1918, in volume 35, pages 359-360
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Published in Proceedings of The Biological Society of Washington, in 1988, in volume 101, pages 794-808
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Published in Annals And Magazine of Natural History, in 1910, in volume 6, issue 33, pages 294-297
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Published in Annals And Magazine of Natural History, in 1904, in volume 14, pages 37-40
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Published in The Auk, in 1917, in volume 34, pages 456-457
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Published in The Auk, in 1920, in volume 37, pages 103-104
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Published in Rhodora, in 1904, in volume 6, issue 71, pages 228
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Published in Forktail, in 2000, in volume 16, pages 170-171
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Published in Journal of Raptor Research, in 1996, in volume 30, issue 4, pages 194-197
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Published in Rhodora, in 1991, in volume 93, issue 876, pages 361-389
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Published in Virginia Journal of Science NS, in 1965, in volume 16, pages 9-21
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Published in The Auk, in 1914, in volume 31, pages 212-235
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Published in Annals And Magazine of Natural History, in 1909, in volume 3, issue 15, pages 279-280
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Published in Annals And Magazine of Natural History, in 1890, in volume 5, pages 256-257
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Published in Annals And Magazine of Natural History, in 1908, in volume 1, issue 1, pages 86-95
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Published in The Wilson Bulletin, in 1993, in volume 105, issue 3, pages 497-503
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Published in The Wilson Bulletin, in 1929, in volume 41, issue 1, pages 3-18
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Published in The Wilson Bulletin, in 1930, in volume 42, issue 3, pages 163-183
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Published in Journal of The Bombay Natural History Society, in 2007, in volume 104, issue 3, pages 347-348
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Published in Forktail, in 1999, in volume 15, pages 95-96
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Published in Proceedings of The Biological Society of Washington, in 1977, in volume 90, pages 116-131
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Published in Journal of Raptor Research, in 1993, in volume 27, issue 3, pages 154-160
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Published in Biol Bull, in 1948, in volume 94, pages 16-24
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Published in Virginia Journal of Science, in 1974, in volume 25, issue 1, pages 5-19
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Published in Raptor Research, in 1975, in volume 9, issue 1/2, pages 18-20
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Published in Raptor Research, in 1986, in volume 20, issue 1, pages 39-41
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Published in Annals And Magazine of Natural History, in 1906, in volume 17, issue 97, pages 1-11
Created: 2010-04-21, modified: 2016-12-08
Published in Proceedings of The Biological Society of Washington, in 1984, in volume 97, pages 544-549
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Published in Virginia Journal of Science NS, in 1960, in volume 11, pages 53-77
Created: 2018-04-15, modified: 2018-04-15
Published in Journal of Raptor Research, in 1997, in volume 31, issue 2, pages 175-186
Created: 2017-04-07, modified: 2017-04-07
Published in Journal of Raptor Research, in 2002, in volume 36, issue 1, pages 58-65
Created: 2017-04-07, modified: 2017-04-07
Published in The Auk, in 1913, in volume 30, pages 276-277
Created: 2013-03-07, modified: 2013-03-08
Published in Forktail, in 2013, in volume 29, pages 31-36
Created: 2019-05-12, modified: 2019-05-12
Published in The Wilson Bulletin, in 1993, in volume 105, issue 3, pages 490-496
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Published in Biol Bull, in 1949, in volume 96, pages 70-73
Created: 2010-01-06, modified: 2011-06-21
Published in Proceedings of The Biological Society of Washington, in 1973, in volume 86, pages 79-103
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Published in Journal of Raptor Research, in 1991, in volume 25, issue 3, pages 96
Created: 2017-04-07, modified: 2017-04-07
Published in Journal of Raptor Research, in 1996, in volume 30, issue 1, pages 46-48
Created: 2017-04-07, modified: 2017-04-07
Published in Journal of The Bombay Natural History Society, in 2003, in volume 100, issue 1, pages 123-126
Created: 2015-10-13, modified: 2015-10-13
Published in The Wilson Bulletin, in 1996, in volume 108, issue 1, pages 123-128
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Published in Journal of Raptor Research, in 2001, in volume 35, issue 1, pages 66-67
Created: 2017-04-07, modified: 2017-04-07
Published in Journal of Raptor Research, in 1987, in volume 21, issue 3, pages 120-121
Created: 2017-04-07, modified: 2017-04-07
Published in Annals And Magazine of Natural History, in 1899, in volume 3, pages 151-152
Created: 2011-09-23, modified: 2016-04-24
Published in Annals And Magazine of Natural History, in 1905, in volume 16, pages 1-10
Created: 2011-09-22, modified: 2011-09-22
Published in Scientific Transactions of the Royal Dublin Society, in 1900, in volume 2, pages 221-252
Created: 2010-11-22, modified: 2011-06-21