Letters

01 December 2001
Comments Letters When watching House Martins Delichon urbica in 1967, I wrote in my notebook: `Is the mud for the structure of their nests carried on, rather than in, their beaks?'. My impression then was that the birds carried up the mud on the beak, and pressed it in...
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Letters

01 April 1971
Comments Letters Further notes on Nutcracker In 1968 and 1969 In my paper on the invasion of Nutcrackers Nmfrttga catyecatactes in autumn 1968 (Brit. Birds, 63: $53-373), I inadvertently omitted a reference to Norway from the brief national summaries of the situation in c...
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