Letters

01 April 1986 Comments Letters Escapes? Some years ago, Derek Goodwin and the late Derrick England published some long comments on the problem for birdwatchers of escaped cage birds (Brit. Birds49: 339-349; 67: 177-197). Since those papers, a new generation of birders has appeared, ...
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Letters

01 December 1954 Comments Letters SIRS,--In his paper on "The snail-eating behaviour of Thrushes and Blackbirds" (antea, p. 38) D. Morris states that "the snail-shell is held by the rim of its aperture," but I do not think that he can be right. If a bird holds the shell by its rim alone i...
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