ABSTRACT Evidence supporting the natural vagrancy of a Baikal Teal Anas formosa shot in Denmark in November 2005 prompted BOURC to review the British records of this species.The results of a stable-hydrogen isotope analysis of feathers from the specimen of a Baikal Teal shot at Tillingham, Essex, in January 1906 suggested that the bird had not been hatched in western Europe, and this record was duly accepted by BOURC as the first for Britain.Ten subsequent British records were examined; of these, a first-winter male at Minsmere, Suffolk, in November–December 2001, was placed in Category A of the British List.

Issue 12
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