A study of Swift weights

01 September 1971
Comments Main paper N E A R L Y A L L OF 2,546 Swifts Apus apus caught at Rye Meads Sewage Purification Works, Hertfordshire, in the late spring and summer of 1962 (845) and 1963 (1,701) were weighed and examined before being ringed and released. The pattern of the weights w...
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Recovery of Marked Birds

01 December 1963
Comments Main paper T H E following have kindly sent · in subscriptions towards t h e expenses of the Marking Scheme since the last acknowledgment was made : Messrs. A. E . Aldous, J. S. Allison, C. F . Archibald, A. BanKes, R. M. Barrington, K. O. Blyth, P. A. Buxton, t ...
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