Letters

01 February 1975
Comments Letters Bill colour of juvenile Arctic Terns Graham Bundy {Brit. Birds, 67: 246-247) stated that the bills of juvenile Arctic Terns Sterna paradisaea on their breeding grounds in Shetland have definite red or orange at the base, this being at variance ...
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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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