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