Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 217-238

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 249-256

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 259-261

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 238-249

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 256-259

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 126-127

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 82-90

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 101-105

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 105-108

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 108-112

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 113-117

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 118-119

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 119-121

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 122-123

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 123-124

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 124-126

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 7-14

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, issue 1, pages 14-25

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 25-31

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 36-47

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 47-52

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 55-56

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 32-35

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 52-54

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 56-57

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 57-58

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 59-61

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 67-82

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, pages 90-101

Published in Bulletin of The British Ornithologists' Club, in 1998, in volume 118, issue 3, pages 141-153

Published in Bulletin of the British Ornithologists' Club, in 1998, in volume 118, issue 4, pages 204-217