Published in Bulletin of The British Ornithologists' Club, in 1937, in volume 57, pages 64-65
Published in Bulletin of The British Ornithologists' Club, in 1937, in volume 57, pages 66-67
Published in Bulletin of The British Ornithologists' Club, in 1937, in volume 57, pages 142-143
Published in Bulletin of The British Ornithologists' Club, in 1937, in volume 57, pages 148-150
Published in Bulletin of the British Ornithologists' Club, in 1937, in volume 57, pages 151-154
Published in Bulletin of The British Ornithologists' Club, in 1937, in volume 57, pages 154-157