Like Bob I have also been on the lookout for Chiffchaffs. This morning I had a walk along the old railway in Llanilar, without success. In the past seven years my first Chiffchaff, apart from the odd wintering bird, has been found between 9th and 20th March, except for 2012 when I had to wait until 24th March.
Before Llanilar I had a look at Llanrhystud. Apart from a very large flock of Starlings and hundreds of Black-headed Gulls there were just a few waders on the beach: 17 Turnstones, six Ringed Plover and a Dunlin, and a Wigeon and two Teal on the sea.