" 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 also consider that the conclusions drawn from it do not necessarily follow and would like to make a few comments. (1) Reluctance to fly in high winds ...

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