Published in Bulletin of the British Ornithologists' Club, in 1922, in volume 42, pages 72-76

Published in Bulletin of the British Ornithologists' Club, in 1922, in volume 43, pages 20-23

Published in Bulletin of The British Ornithologists' Club, in 1922, in volume 42, pages 140-141

Published in Bulletin of The British Ornithologists' Club, in 1922, in volume 43, pages 38-39

Published in Bulletin of the British Ornithologists' Club, in 1922, in volume 42, pages 44-47

Published in Bulletin of the British Ornithologists' Club, in 1922, in volume 42, pages 60-64