This bird, seen by Chris at Aberystwyth on Saturday (see post below) had been ringed as a pullus at a colony at Jablines, Seine-et-marne, France on 22nd June, 2014.
It was subsequently seen near Cadiz, Spain in December, 2014 and back in the region of France where it had been ringed in April and May 2015.
The next sighting was by Chris at Aberystwyth on 14th August 2015.
(Probably another example of a Mediterranean Gull which flies north to the Ceredigion coast after the breeding season before moving south to Spain or Portugal for the winter.)