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 273-277
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, pages 231-233
Published in Bulletin of the British Ornithologists' Club, in 2001, in volume 121, issue 4, pages 234-236
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 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 278-279
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 183-197
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, pages 215-216
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 128-144
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 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 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, 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, pages 257-263
Published in Bulletin of The British Ornithologists' Club, in 2001, in volume 121, pages 280-281