Larus glaucus
A winter visitor; rare.
Specimens of this splendid Polar Gull are occasionally obtained upon the coast. There is a fine adult, with a white mantle, in the Stackpole collection, that was shot many years ago, near Tenby. In the winter of 1891, Mr. C. Jefferys, of Tenby, informs us that he several times saw a Glaucous Gull flying about in company with Herring Gulls.