Published in Bulletin of The British Ornithologists' Club, in 1959, in volume 79, pages 41-42

Published in Bulletin of The British Ornithologists' Club, in 1959, in volume 79, pages 42-46

Published in Bulletin of The British Ornithologists' Club, in 1959, in volume 79, pages 51-52

Published in Bulletin of The British Ornithologists' Club, in 1959, in volume 79, pages 124-127

Published in Bulletin of The British Ornithologists' Club, in 1959, in volume 79, pages 152