Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 9-17

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 18-21

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 23-34

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 34-41

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 42-43

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 44-47

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 53-60

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 60-61

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 75-84

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 85-87

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 88-92

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 93-96

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 97-102

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 103-108

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 108-119

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 119-120

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 121-126

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 139-145

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 145-147

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 147-152

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 152-166

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 166-168

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 169-172

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 173-178

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 179-187

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 188-189

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 189-190

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 190

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 191

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 195-207

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 209-212

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 213-215

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 216-224

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 225-229

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 234-255

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 255-257

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 257-259

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 260-263

Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 263-264

Published in Bulletin of the British Ornithologists' Club, in 1993, in volume 113, issue 1, pages 21-23