Published in Bulletin of The British Ornithologists' Club, in 1917, in volume 47, pages 145-146
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 35, pages 49-51