Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 23-37
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 38-39
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 39-49
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 50-62
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 62-63
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 64-67
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 68
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 69-71
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 71-80
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 91-93
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 94-98
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 98-107
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 107-110
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 110-116
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 116-127
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 128-144
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 183-197
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 198-208
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 208-213
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 215-216
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 222-230
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 231-233
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 236-246
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 247-249
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 249-252
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 252-255
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 256-257
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 257-263
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 264-265
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 266-272
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 273-277
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 278-279
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 280-281
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 281-296
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, issue 1, pages 10-23
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, issue 3, pages 152-182
Published in Bulletin of the British Ornithologists' Club, in 2001, in volume 121, issue 3, pages 213-215
Published in Bulletin of the British Ornithologists' Club, in 2001, in volume 121, issue 4, pages 234-236