Letters

01 November 1966 Comments Letters Fault-bars as a means of ageing birds Sirs,---Last year I read a letter by C. J. Mead on the ageing of birds by means of fault-bars (Brit. Birds, 58: 227-228), in which he referred to the work of W. E. Glegg who noted fault-bars on the tails of 737 bird s...
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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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