Scientific: Larus atricilla
Cymraeg: Gwylan Chwerthinog
First winter Pentre Davis and Dryslwyn November 6th-8th. What may have been the same bird at Sandy Water Park November 25th-28th and the same December 2nd-3rd.
The bird from the previous year at Sandy Water Park January 3rd and presumed the same at Llanelli North Dock January 19th.