Published in Bulletin of The British Ornithologists' Club, in 2009, in volume 129, issue 3, pages 191-192

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

Published in Bonner Zoologische Beiträge, in 1998, in volume 49, pages 131-153

Created: 2014-05-17, modified: 2014-05-17

Published in Bulletin of the British Ornithologists' Club, in 2012, in volume 132, issue 4, pages 270-276

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

Published in Bulletin of The British Ornithologists' Club, in 2008, in volume 128, issue 4, pages 260-263

Created: 2015-08-11, modified: 2015-08-11

Published in Bulletin of the British Ornithologists' Club, in 2012, in volume 132, issue 4, pages 260-269

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