Published in Bulletin Br Orn Club, in 1973, in volume 93, pages 111-114
Created: 2013-01-29, modified: 2013-01-29
Published in Bulletin Br Orn Club, in 1973, in volume 93, pages 139-140
Created: 2013-01-29, modified: 2013-01-29
Published in Bulletin Br Orn Club, in 1973, in volume 93, pages 141-142
Created: 2013-01-29, modified: 2013-01-29
Published in Bulletin Br Orn Club, in 1973, in volume 93, pages 143-144
Created: 2013-01-29, modified: 2013-01-29
Published in Bulletin of the British Ornithologists' Club, in 1973, in volume 93, issue 4, pages 145-155
Created: 2014-03-05, modified: 2014-03-05