Published in Bulletin of The British Ornithologists' Club, in 1906, in volume 19, pages 34
Published in Bulletin of The British Ornithologists' Club, in 1906, in volume 16, pages 87-88
Published in Bulletin of The British Ornithologists' Club, in 1906, in volume 19, pages 24
Published in Bulletin of The British Ornithologists' Club, in 1906, in volume 19, pages 32
Published in Bulletin of The British Ornithologists' Club, in 1906, in volume 16, pages 61-62
Published in Bulletin of the British Ornithologists' Club, in 1906, in volume 19, pages 32-33