Published in Bulletin of the British Ornithologists' Club, in 1931, in volume 51, pages 59

Created: 2014-02-26, modified: 2014-02-26

Published in Bulletin of The British Ornithologists' Club, in 1931, in volume 51, pages 80-81

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

Published in Bulletin of the British Ornithologists' Club, in 1931, in volume 51, pages 81

Created: 2015-05-12, modified: 2015-05-12

Published in Bulletin of the British Ornithologists' Club, in 1931, in volume 51, pages 109-112

Created: 2015-02-11, modified: 2015-02-11