Letters

01 May 1978 Comments Letters Field identification of Black-throated Diver in winter Mystery photograph 14 (Brit. Birds 71: 34) was very interesting and instructive. It illustrated clearly the distinctive white thigh patch of Black-throated Diver Gavia arctica, which I have...
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Letters

01 February 1935 Comments Letters SIRS,--May I say something on this vexed subject ? I speak of those territorial species whose young depend upon insects for food. Three sets of facts seem connected :-- (i) T h a t in a cold and wet breeding season we find infertile eggs, chicks dead in t...
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