I mentioned in a comment recently that there were very few records of Nearctic landbirds in Shetland. Being the sad bastards that we are (and also bored), Rob & I have just been through the Birds of Shetland book and the website archives since 2004 to see just how many there have been. And the answer is... (yes?) IS..... (YES?):
Furthermore, we have established that exactly half of them have been on Fair Isle or Foula, and the majority (24) have been in September. In fact, there has only ever been one Nearctic landbird in South Mainland in October, and that was a Blackpoll Warbler in the Sumburgh Hotel garden on 6th October 1990.
So, despite the fact that it's raging south-westerly at the moment, and Ireland and the South-west are drowning in Yanks, it's highly unlikely that we'll get one here. On the other hand, you could say that South Mainland is overdue another one in October...