01 February 1985
Comments Notes Green-backed Heron in Humberside. On 27th November 1982, together with other observers, including T. Bell and P. A. Bentley, we were searching for a Great White Egret Egretta alba that had been reported in the Thorngumbald area on the north side of the...
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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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