Published in Bulletin of the British Ornithologists' Club, in 2011, in volume 131, issue 4, pages 261-265

Created: 2018-10-08, modified: 2018-10-08

Published in Bulletin of The British Ornithologists' Club, in 2009, in volume 129, issue 4, pages 256-258

Created: 2015-05-17, modified: 2015-05-17

Published in Bulletin of The British Ornithologists' Club, in 2010, in volume 130, issue 1, pages 61-68

Created: 2015-05-17, modified: 2015-05-17

Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 168-178

Created: 2017-01-01, modified: 2017-01-01

Published in Proceedings of The American Philosophical Society, in 1912, in volume 51, issue 205, pages 242-251

Created: 2017-01-01, modified: 2017-01-01

Published in Bulletin of the British Ornithologists' Club, in 2011, in volume 131, issue 1, pages 67-69

Created: 2018-10-08, modified: 2018-10-08