this is the time of year when the highly prized, and often very beautiful, american passerines are the stuff of dreams for a birder to find and well, a weather system coming across the atlantic dumped an insane number of them along the west of the UK from the Western Isles down to the Isles of Scilly, but particularly west wales (focused around pembrokeshire) - now officially the best run of yanks ever recorded
so far
the most prized of all - american wood warblers (just one of these is usually considered a birder's highlight of the autumn!)
Ovenbird
Black-and-white Warbler 3
Tennessee Warbler 2
Northern Parula
Magnolia Warbler
Bay-breasted Warbler
Blackburnian Warbler (found before this particular weather front occured)
Yellow Warbler
Canada Warbler
Bay-breasted Warbler - 2nd for UK and first twitchable one (friend of mine has just seen this and is currently heading for the Canada Warbler, which is around the same place he saw the Magnolia Warbler yesterday

)

Magnolia Warbler (3rd record? first real twitchable one tho, being on the mainland)

other american passerines etc also from this weather system mainly but some found before
Bobolink 2
Red-eyed Vireo c.20
Philadelphia Vireo
Cliff Swallow 8
Baltimore Oriole 3
Empidonax Flycather 2 (very difficult to seperate members of this family but one appears to be an Alder Flycatcher, the other one not ID to species yet)
Buff-bellied Pipit 3
this is absolutely insane, with more species being added daily at this point
im in my 60s now and in the 70/80s there were the 'stuff of dreams' autumns, espcially on the Isles of Scilly, of legendary tales regarding yanks, like a Black-billed and Yellow-billed Cuckoo in the same tree but this fall of american passerines blows all of those out of the water!
up to this point the autumn had been noteable for an exceptional season for seabirds, the amazing occurence of a Red-footed Booby and a Brown Booby sat on Bishop Lighthouse between Land's End and the Isles of Scilly being the highlight (closely followed by a South Polar Skua) (fyi - there's a Brown Booby in Cleveland that's been around for two weeks and still there, hangs around on buoys in the Tees estuary)
https://www.youtube.com/v/wrh0d2DpHOMfuck knows what else is going to get found, you can bet birders will be putting in the time over the weekend hoping for one of these american beauts. and if the weather remains mild thru the winter, there's every chance a yank warbler will turn up on someone's patch - we've had this before with winter yanks being found at bird feeders or roaming around with a tit flock, exciting times
oh, and Glossy Ibis has bred in the UK for the first time ever this year, somewhere near cambridge