Letter

01 December 1986 Comments Letters Comments on group characteristics. The rare group study in the September issue (Brit. Birds 79:451, plate 249) gives a photographic record of a species which is still largely unfamiliar to many of us. In March 1986, the individuals of the group were cl...
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Letters

01 April 1929 Comments Letters SIRS,--The observations conducted b y Messrs. Ingram and Salmon on the dives of the Long-tailed Duck (antea, p . 264) reopen a veryinteresting question, and one which, I think, is still some way from being satisfactorily answered. In estimating the averag...
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