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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Letter

01 July 1929 Comments Letters SIRS,--With reference to the discussion on the diving of . Scoters (Vol. X X I I I . , p p . 214, 378) m a y I contribute the following note : The Liverpool Bay Scoters are, a t times, driven b y stress of weather to take refuge behind the sandhills of th...
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