Just responding to your earlier post re:Kumlien's Gulls. I've had a look at the shots of the regular bird now (per your attachments as previously I was going off memory to be honest) and the Rossaveal bird is in fact to my eyes a different bird.
Have a look at the shot by Glyn Sellors on Surfbirds... it's a lot less mature mantle and coverts wise with a darker tail as well as retaining a dark eye and less advanced bill compared to the regular bird.
I put a load of gull shots from the weekend on my website and may well see you again the first weekend of March when I'll be sure to be back in Galway.
Cheers and good birding