Letters

01 April 2002
Comments Letters Having read the `Report on rare birds in Great Britain in 2000' (Brit. Birds 94: 452-504), as well as several of the previous Reports, I feel that clarification is needed on the correct terminology to be used with regard to rare species the occurrence ...
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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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