Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 1-7
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 8-9
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 9-10
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 10-11
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 11-12
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 12-14
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 14-18
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 18
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 19-20
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 20-21
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 21-25
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 25-28
Created: 2012-12-03, modified: 2015-05-01
Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 28-32
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 32
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 36-39
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 41
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 46-49
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 56-60
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 61-64
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 64-65
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 66-76
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 76-79
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 79-81
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 81-84
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 88
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 90-92
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 92-93
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 93-94
Created: 2012-12-03, modified: 2015-05-01
Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 94-95
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 95
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 98-99
Created: 2012-12-03, modified: 2015-04-25
Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 99-103
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 103-107
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 108-109
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 110-111
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 111-113
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 113-116
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 117-119
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 121-125
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 125-126
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 126-131
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 131-133
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 134-135
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Published in Bulletin of The British Ornithologists' Club, in 1971, in volume 91, pages 137-144
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Published in Bulletin of the British Ornithologists' Club, in 1971, in volume 91, issue 4, pages 96-98
Created: 2012-12-03, modified: 2015-10-21