Letters

01 December 1971 Comments Letters International Ornithological Congresses In 1960 you were kind enough to allow me to expose myself in the van of some correspondence on the International Ornithological Congresses (Brit. Birds, 53: 583-584; 54: 80-92, 170-171). Since I gather from your rec...
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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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