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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Letters

01 February 1983
Comments Letters Sabine's Gulls in Britain in winter. Recent issues of British Birds have included two references to Sabine's Gulls Larus sabini being recorded in Britain during the winter, from December to March. The first, in 'Recent reports' (Brit. Birds 74: 237), r...
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