Published in Bulletin of The British Ornithologists' Club, in 1904, in volume 14, pages 42-46
Published in Bull. Brit. Orn. Cl., in 1904, in volume 14, pages 77-78
Published in Bulletin of The British Ornithologists' Club, in 1904, in volume 14, pages 82-83
Published in Bulletin of The British Ornithologists' Club, in 1904, in volume 14, pages 83-84
Published in Bulletin of the British Ornithologists' Club, in 1904, in volume 15, pages 10-11