Published in Bulletin of the British Ornithologists' Club, in 1942, in volume 62, pages 41-43

Published in Bulletin of The British Ornithologists' Club, in 1942, in volume 62, pages 51-52

Published in Bulletin of the British Ornithologists' Club, in 1942, in volume 62, pages 54

Published in Bulletin of The British Ornithologists' Club, in 1942, in volume 63, pages 8-19