To-do list for the UK

I will need to see over 30 new species to stand a chance, I suspect... so here are some possibles.

Mandarin Duck
Red Kite
Common Gull
Mediterranean Gull
Yellow-legged Gull
Willow Warbler
Reed Warbler
Chiffchaff
Stonechat
Skylark
Green Woodpecker
Pied Wagtail
Wren
Treecreeper
Chough
Rook
Bullfinch
Common Sandpiper
Green Sandpiper
Greenshank
Turnstone
Dunlin
Knot
Whimbrel
Sparrowhawk
Gannet
Oystercatcher
Dunlin
Black-tailed Godwit

Great resource: http://www.glamorganbirds.org.uk/