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 April 1967
Comments Letters Eruptions of Great Tits and other species Sirs,--I was interested in Dr. C. M. Perrins's paper on the effect of the seed crop of the beech Fagus sylvatka on the populations and movements of the Great Tit Partis major (Brit, Birds, 59: 419-432). To strengt...
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