Earlier this month a red colour-ringed Mediterannean Gull was sighted at our Pembrokshire Reserve, Westfield Pill by Dave Astins. This bird was ringed as a pullus, which is a a young bird or nestling that is not yet able to fly, in southern Poland at the end of May last year. That's 1,000 miles in a straight line between the 2 sites. Pretty amazing!
Westfield Pill hosts a lake, which is partly tidal, and has an area of reedbed at the northern end and muddy margins to the south. Many species of bird overwinter on this site which has now been visited by this Polish visitor.