Steve Seal has had details of the colour-ringed Med Gulls which he saw at Llanon on Friday.
R2EH was ringed as a pullus in the Vendee, France in June 2020. Subdsequent sightings have been in Dorset, Nov 2020 Brittany Jan 2021, Nevern Est. PembsMarch 2021, then from July to Sept 2021 at Aberystwyth, New Quay and Llanon, back to Brittany in Dec then finally this month at Aberystwyth and Steve's sighting at Llanon. A fairly typical tour, based on many of the previous Med Gulls of which we have sightings histories.
R3XX has previously been noted in Ceredigion, but i haven't found details yet.