This is on the #glambirds Twitter feed, but just to make sure, there’s a Sabine’s Gull currently at Rhaslas Pond, found this morning by Mike Hogan. In case you’ve never been there it’s east of Dowlais top near Merthyr. Here’s a link to a map:

http://www.streetmap.co.uk/map.srf?X=309280&Y=207360&A=Y&Z=120