A second Ring-billed Gull in Glamorgan
01 December 1973
Main paper
Less than three months after the first recorded British occurrence of the Ring-billed Gull Larus delawarensis, an adult at Blackpill, Swansea Bay, Glamorgan (Hume 1973), D. W. Evans and I found a first-summer bird of this species at the same locality. ...
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