An immature (2nd or 3rd cal yr) Nelson's Gull (Glaucous Gull x Herring Gull) was found by James Garside from Swansea Uni at Simpson's Cross yesterday morning; unfortunately all the Gulls there had moved on when I went to check in the afternoon. However James managed to get a number of photos, some of which are below. Another interesting Gull in Pembs - nice one James.
Thanks to Dave Astins, Paul Grennard and Mark Hipkin for comments.