Ringed as pullus at Zeebrugge (51.21N 03.11E) on July 07 1999. An individual with worn white tips on the outer primaries, a small white mirror on P10, black markings on the bill and no moult of the head-feathers. The orbital ring is red and the iris is clear yellow. The red gonydeal spot doesn't continue on the upper mandible. P1 is still old.