Surely this is "Old Faithfull" that has been wintering with us since the 7th November 2007?

Ringed as nestling on 10/07/2007 at Oosterkwelder, Shiermonnikoog, West Fresian Islands, Netherlands.

Ring combination: left leg - dark-green colour ring, above yellow leg-flag, above dark-green yellow ring.   

                              right leg-dark-blue colour ring, above metal ring NLA 8048768, above lime-green colour ring.