From a few days ago:
481) Red-necked Grebe
A number of additions from a few days spent on the Hel Peninsula, including quite a few species rare/vagrant in Poland.
482) Long-tailed Duck
483) Smew
484) Red-throated Diver
485) Caspian Tern
486) Black Guillemot
487) Brambling
488) Arctic Redpoll
489) Lapland Longspur
Also worth mentioning is vagrant Kittiwakes although I’ve seen the species earlier in the year in the UK.
And that will most likely be my last significant addition this year. I doubt I’ll hit 500 this year, but I’m quite pleased with the total.