Letters

01 June 1969 Comments Letters Bill-length as a field-character of the White-winged Black Tern ? In his paper on 'Juvenile and winter plumages of the marsh terns' (Brit. Birds, 53: 243-252) Kenneth Williamson differentiated without qualification between the bill of the Black Tern Chlid...
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Letters

01 August 1968 Comments Letters Waxwing omission Sirs,--Owing to a regrettable oversight, our paper on 'Waxwings in Britain and Europe during 1965/66' (Brit. Birds, 6 1 : 97-118) failed to acknowledge the work of T. Ennis and the Northern Ireland Ornithologists' Club in sending us recor...
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