Letters

01 February 1993 Comments Letters The Cape Clear 'Griffons' The difficulty which Griffon Vultures Gyps fulvus have in maintaining flapping flight for substantial periods over the sea makes it highly improbable that the five unidentified eagle-like birds observed flying past Cape Clear ...
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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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