So I was there this morning only to find Rich had beat me to it and I'd already missed adult Iceland and 2nd winter Glaucous.... but the best was yet to come.
Over the next hour, we and Tom had two adult Yellow-legged, another Glauc (1st w) and, best of all, a 1st winter Caspian. The Caspian only the second ever Hartlepool record.
Such a collection would match any of the well known tips in the UK and justs backed up the belief that with such massive numbers of big gulls at this tip, it just needed time and effort to find the goodies.
Now, where's the Slaty-backed...