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 1955
Comments Letters A M E R I C A N L A N D - B I R D S IN W E S T E R N E U R O P E SIRS,---I should like to offer brief comments on the fine paper on "American land birds in western E u r o p e " in the January issue (ante a, pp. 1-14). It seems to me that it may overstate...
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