Published in Bulletin of The British Ornithologists' Club, in 1918, in volume 38, pages 48-49

Published in Bulletin of The British Ornithologists' Club, in 1918, in volume 38, pages 53-54

Published in Bulletin of The British Ornithologists' Club, in 1918, in volume 38, pages 58-60

Published in Bulletin of The British Ornithologists' Club, in 1918, in volume 38, pages 64-65

Published in Bulletin of the British Ornithologists' Club, in 1918, in volume 38, pages 83-87