Published in Bulletin of The British Ornithologists' Club, in 1933, in volume 53, pages 119-124

Created: 2012-09-16, modified: 2012-09-16

Published in Bulletin of the British Ornithologists' Club, in 1933, in volume 53, pages 129-161

Created: 2012-09-16, modified: 2015-07-12

Published in Bulletin of the British Ornithologists' Club, in 1933, in volume 53, pages 154

Created: 2016-09-19, modified: 2016-09-19

Published in Bulletin of The British Ornithologists' Club, in 1933, in volume 54, pages 19-20

Created: 2012-09-16, modified: 2012-09-16