Published in Bulletin of The British Ornithologists' Club, in 1924, in volume 44, pages 36-37

Published in Bulletin of The British Ornithologists' Club, in 1924, in volume 44, pages 70-71

Published in Bulletin of The British Ornithologists' Club, in 1924, in volume 45, pages 7-9

Published in Bulletin of The British Ornithologists' Club, in 1924, in volume 45, pages 41-42