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...
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Letters

01 February 1935 Comments Letters SIRS,--May I say something on this vexed subject ? I speak of those territorial species whose young depend upon insects for food. Three sets of facts seem connected :-- (i) T h a t in a cold and wet breeding season we find infertile eggs, chicks dead in t...
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Notes

01 February 1935 Comments Notes FOR the last few years I have examined a number of Jays killed in Essex, in the hope of finding the Continental form. On November 22nd, 1934, one, a female, was shot at Longwood, Layer Marney, Essex, which had the lower mantle and back greyer than usual....
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