Published in Bulletin of The British Ornithologists' Club, in 1908, in volume 21, pages 76-78
Published in Bulletin of The British Ornithologists' Club, in 1908, in volume 21, pages 88-91
Published in Bulletin of The British Ornithologists' Club, in 1908, in volume 23, pages 7-11
Published in Bulletin of The British Ornithologists' Club, in 1908, in volume 23, pages 17