Letters

01 May 1979 Comments Letters A symbol for individuals not adult males The present biological symbols ♂ and ♀ indicate the two sexes, male and female. The suggested introduction of a third symbol {Brit. Birds 71: 544-545) seems strangely illogical. If the...
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Letters

01 May 1976 Comments Letters The continuing slaughter of birds of prey in Britain Your recent editorial (Brit. Birds, 68: 481-483) on the World Conference on Birds of Prey, organised by the International Council for Bird Preservation in Vienna in October 1975, stimulates t...
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Letters

01 September 1974 Comments Letters Melanism in shearwaters and auksSince Bryan L. Sage (Brit. Birds, 65: 527) comments on the supposed rarity of melanism in Manx Shearwaters Puffinus puffinus and indeed the Procellariiformes in general, it may be worth pointing out that a dark sp...
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Letters

01 January 1957 Comments Letters " ATMOSPHERIC TURBULENCE AND BIRD F L I G H T " S I R S , -- I n his letter on the above subject (antea, vol. xlviii, p p . 557-559) I. C. T . Nisbet puts forward an ingenious theory of wind-determination by feel. While agreeing that it is possible, I als...
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