The tip of the Lleyn and South Stack are the best chances for Chough. South Stack has a pile more good stuff as well, but the tip of the Lleyn can almost guarantee Manxies and, after the bit of rough weather we've just had, there is a possibility of Stormies as well.
Come down to the end of the Lleyn - much closer than South Stack., nice as it is there.
Travel west past the tiny hamlet of Uwchmynydd right to the end of the road overlooking Ynys Enlli (Bardsey island). Theres a car park at SH 142 256 where the birds often feed but they are guaranteed throughout the area anywhere between Brach y Pwll and Pen y Cil. Much of the land is owned by National Trust with lots of open access and good footpaths.
Many family parties around at the minute - and watch out for colour-ringed individuals.