Letters

01 May 1988 Comments Letters Are we getting our figures right? The BTO may well tell me that it is extremely naughty of me to turn their population estimates of winter thrushes Turdus (by D. W. Snow, in Lack 1986) into the rounded ratio of: Blackbird T. merula 28: Song Thrush T. p...
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Letters

01 November 1986 Comments Letters Depths to which auks dive. With reference to the recent note on 'Razorbill [Alca torda] swimming at depth of 140 m' (Brit. Birds 79: 339), I draw attention to a paper published in The Auk last year on 'Diving depths of four alcids' by John F. Piatt and...
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