Larus hyperboreus
Mathew records one short near Tenby “many years ago” and another there in the winter of 1891. One shot Solva about 1870 and one seen same place 24-26 Jan 1913 (H.W.Evans). One shot Pembroke River by J.Wynne 28 Dec 1899. One Dale, 10 Feb 1938, and one immature at the Stacks, Flimston, 14 May 1943.