Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 2-4

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 4-5

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 5-10

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 10-13

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 13-15

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 22-24

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 26-29

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 31-32

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 38-40

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 40

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 41-43

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 43-49

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 50-55

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 55-59

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 65-68

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 87-90

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 90-95

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 95-98

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 99-109

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 109-113

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 113

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 115-116

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 116-118

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 118-122

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 122-127

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 127-128

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 129-131

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 131-140

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 140-144

Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 144-145

Published in Bulletin of the British Ornithologists' Club, in 1978, in volume 98, issue 2, pages 60-66