Letters

01 February 1977
Comments Letters Photographic quality and usefulness While browsing through a dozen recent volumes of the Swedish journal Vår Fågelvårld, I was impressed by the high proportion of photographs depicting birds in flight, even though not all of them were of very good q...
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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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