Letters

01 November 1990
Comments Letters Sexual dimorphism of Marsh Tit. Both Gosler & King (1989) and Nilsson & Smith (1988) have recently reported sexual dimorphism in the intensity of the black of the cap on Marsh Tits Parus palustris (adults and first-years), males having markedly...
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Letter

01 November 1946
Comments Letters S I R S , -- I have observed no less than twenty-three instances between February 27th and March 7th, 1946, where one Rook (Corvus f. frugUegus) was either in or standing upon t h e nest with two attendant Rooks perched close together a t some twelve t o ...
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