Highlight of the day was trying to sort out the Chiffchaffs at St. Ishmaels Waste Water Treatment Works at Monk Haven. At least 9 birds present, many using the filter beds and surrounding trees and vegetation. Two birds had all the characters of Siberian Chiffchaff (tristis) even though they could look quite different depending on the light. Have included a couple of cropped photos from Mike - you get the idea, pale and browny/grey with sullied cheeks and dark bare parts. Did not call but repeat visits will hopefully put that right. Some interesting stuff on these on Birding Frontiers using the links below - one of our birds did look like a Bonelli's Warbler (with a supercilium) at one point as Martin Garner describes.
http://birdingfrontiers.com/2013/12/20/siberian-chiffchaff-3/
http://birdingfrontiers.com/2013/12/10/siberian-chiffchaff-2/
Also a male Firecrest showing well here. A final look at Dale failed in the hoped for gull roost (too calm) but the 6th Great Northern Diver of the day put in a good show from the sea front, close inshore.
(Dave A & Mike Y-P)