There is a huge influx of birds from Britain, Scandanavia and possibly further afield - this was posted on the IBN (By M. Casey):
"Just as a small illustration of how many birds can be using your garden when you see 'a lot' of birds, I noticed Blackbird numbers building up in our rural garden on the Mayo/Sligo birder before Christmas. Nothing dramatic, just noticing 3 or 4 on the front lawn in the morning, and maybe another one calling from behind the house, and seeing ones and twos flying out of the hedge along the drive as I went to work. I started trapping & ringing them just before Christmas as I was off over the Christmas & New Year. In two weeks I processed 69 individual Blackbirds (53 in two days at the peak) in this one garden, of which 52 were new (i.e. unringed) birds, and 17 were local re-traps. 12 birds were long-winged, with wing measurements greater than the normal range seen in our local breeding population, so are presumably migrants from northern Europe. Towards the end of the fortnight I was still catching birds, but virtually all were repeat visitors from the previous days, so most of the birds were staying around. If this is any kind of a representative sample, it is staggering to estimate how many Blackbirds & other thrushes may have been in the parish/county/province at that time."
This influx may well have brought rarities with it so keep an eye out eg woodpeckers, waxwings, sib jay, nutcracker, nuthatch, great grey shrike...dream on!