Letters

01 April 1967
Comments Letters Eruptions of Great Tits and other species Sirs,--I was interested in Dr. C. M. Perrins's paper on the effect of the seed crop of the beech Fagus sylvatka on the populations and movements of the Great Tit Partis major (Brit, Birds, 59: 419-432). To strengt...
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Letter

01 July 1936
Comments Letters S I R S , -- I have often been struck by the apparent differences in colour of Lesser Black-backed Gulls on the Clyde. On May gth, 1936, a t 9.30 a.m. (summer time) I watched half a dozen of these Gulls sitting on a railing on Dunoon pier within a few yar...
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Letter

01 April 1936
Comments Letters S I R S , -- I n British Birds, Vol. X X V I I . , there were published several letters about early instances of t h e recognition of Territory, a n d Dr. N . F . Ticehurst pointed o u t t h a t t h e possession of territories by Mute Swans was recorded a...
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Letters

01 April 1936
Comments Letters SIRS,--In view of Mr. Lack's note on t h e repeated re-trapping of Robins (antea, p . 288), I m a y mention t h a t in t h e winter of 1929-30, when a t Cambridge, I had a Sparrow t r a p in t h e garden " baited " with seed. Greenfinches (Chloris ch. Mor...
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Letters

01 March 1936
Comments Letters S I R S , -- I was very interested in Mr. H . G. Alexander's letter on t h e movements of sea birds a t Dungeness (antea, pp. 298-9), because I watched a considerable movement of divers there on January 25th, 1936. I first reached t h e coast a t Camber, ...
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Letters

01 February 1936
Comments Letters S I R S , -- I have studied with considerable interest, in the December issue, Mr. H. G. Alexander's article and chart on the song-periods ·of birds, and all the more so as t h e songs and notes of birds have been an engrossing study with me (in Cheshire...
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