When I was out checking flocks for colour-ringed birds on New Year's Day I saw this fella at Sandy Bay, Larne roosting with the Black-headed Gulls. It is, of course, a Mediterranean Gull not a Black-headed Gull.
Although there were six nesting pairs in Larne Lough last year(2012), Mediterranean Gulls are still a notable sighting around here. Though in a recent email from Sean Kingston in Dublin, he told me the Med Gull flock at Sandycove in Dublin is now regularly in excess of 100 birds.
Sean et al. have been colour-ringing Mediterranean Gulls, so here's yet another species to check for Darvic rings!
To find out a bit more about Med Gull research, click on the link below: