Letters

01 November 1984
Comments Letters Recommended letter-code abbreviations for British birds. For over 20 years, members of the BTO have been using letter-codes to register birds seen on Common Birds Census visits. Various additions to the list of codes have been made over the years, nota...
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Letters

01 September 1974
Comments Letters Melanism in shearwaters and auksSince Bryan L. Sage (Brit. Birds, 65: 527) comments on the supposed rarity of melanism in Manx Shearwaters Puffinus puffinus and indeed the Procellariiformes in general, it may be worth pointing out that a dark sp...
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