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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Letter

01 December 1940
Comments Letters SIRS,--For some years past, Mr. Charles Oldham has regularly published observations on t h e midsummer movements of Swallows, House- and Sand-Martins and Swifts at t h e Tring and Elstree Reservoirs in t h e Transactions of the Herts Nat. Hist. Soc. An id...
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Letter

01 September 1940
Comments Letters SIRS,--Since contributing m y paper on Mrs. C. L . E . Perrott's Selection of British Birds (antea, Vol. X X X I I , p . 122/126) I have learned t h a t there are extant two more copies of this book of which I thought t h e only copy in existence was t h ...
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