Published in Bulletin of the British Ornithologists' Club, in 1917, in volume 35, pages 49-51

Published in Bulletin of The British Ornithologists' Club, in 1917, in volume 37, pages 56

Published in Bulletin of the British Ornithologists' Club, in 1917, in volume 38, pages 29-34

Published in Bulletin of The British Ornithologists' Club, in 1917, in volume 47, pages 145-146