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 May 1959 Comments Letters T H E I N F L U X O F P H A L A R O P E S IN A U T U M N 1957 S I R S , -- I wish to correct two errors which unfortunately appeared in the paper on the above subject by myself and Bernard King (antea, p p . 33-42). In the introduction on page 33 the reco...
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