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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... Read More

Letters

01 February 1961 Comments Letters The Len Howard Appeal Sirs--All readers of Miss Len Howard's books Birds as Individuals and Living with Birds have been distressed to learn that her life's work is threatened by building on the land next to her garden sanctuary. For twenty-one years Miss ... Read More

Letters

01 August 1952 Comments Letters SIRS,--The Ibis for April 1953 will include a group of papers on Visible Migration (particularly in passerine birds) as observed in various countries. The newly-formed Sub-committee on Visible Migration of the British Trust for Ornithology (see below) fee... Read More

Visible migration at Land's End

01 March 1952 Comments Main paper THE study of visible migration, initiated by Eagle Clarke (1912), has received a new impetus in the last few years. In October, many Sky-Larks (Alauda arvensis), Chaffinches (Fringilla caslebs) and Starlings (Sturnus vulgaris), with smaller numbers of oth... Read More