Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 4-9

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 12

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 13-14

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 18-19

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 20-22

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 22-27

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 27-28

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 29-43

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 43-50

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 52-54

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 54-58

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 58-61

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 62-64

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 64-68

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 68-70

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 70-71

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 71-75

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 75-79

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 79-87

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 87-91

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 91-93

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 93-98

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 100

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 101-103

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 103-112

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 112-120

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 120-125

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 125-127

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 127-131

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 135-136

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 136-139

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 139-141

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 141-144

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 144-147

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 147-150

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 154-159

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 169-172

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 175-176

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 177-179

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 179-182

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 182-184

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 184-185

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 186-187

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 187-193

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 193-194

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, pages 195-206

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, issue 1, pages 9-12

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, issue 3, pages 132-135

Published in Bulletin of The British Ornithologists' Club, in 1988, in volume 108, issue 4, pages 159-169