Published in Bulletin of the British Ornithologists' Club, in 1957, in volume 77, pages 10-16
Created: 2014-07-01, modified: 2014-07-01
Published in Bulletin of The British Ornithologists' Club, in 1957, in volume 77, pages 24-25
Created: 2013-01-29, modified: 2013-01-29
Published in Bulletin of The British Ornithologists' Club, in 1957, in volume 77, pages 26-29
Created: 2013-01-29, modified: 2013-01-29
Published in Bulletin of The British Ornithologists' Club, in 1957, in volume 77, pages 44-46
Created: 2013-01-29, modified: 2013-01-29
Published in Bulletin of The British Ornithologists' Club, in 1957, in volume 77, pages 49-52
Created: 2013-01-29, modified: 2013-01-29
Published in Bulletin of The British Ornithologists' Club, in 1957, in volume 77, pages 58-60
Created: 2013-01-29, modified: 2013-01-29
Published in Bulletin of The British Ornithologists' Club, in 1957, in volume 77, pages 99-102
Created: 2013-01-29, modified: 2013-01-29
Published in Bulletin of The British Ornithologists' Club, in 1957, in volume 77, pages 102
Created: 2013-01-29, modified: 2013-01-29
Published in Bulletin of the British Ornithologists' Club, in 1957, in volume 77, pages 103
Created: 2014-10-28, modified: 2014-10-28
Published in Bulletin of The British Ornithologists' Club, in 1957, in volume 77, pages 153-154
Created: 2013-01-29, modified: 2013-01-29
Published in Bulletin of The British Ornithologists' Club, in 1957, in volume 77, pages 155-156
Created: 2013-01-29, modified: 2013-01-29