Swainson's Thrush on Barra!! My pick. Pity it's on the Outer Hebrides. Tried to twitch a YELLOW WARBLER present there in '04 with Tony Dixon, Richard George and Erich Hediger. We made it up to Oban. The chaps slept in the car (cosy) while yours truly got a B&B. Yes I know, but in my defence I'd had a hip resurfacing 6 weeks previous!
We woke up next morning to a force 8 gale. The harbour looked like a washing machine. We later heard that a sub had got into trouble off the Outer Hebrides.
No sail...no bird.
There MUST be something lurking in the SW...