Ringed as pullus at Zeebrugge (51.21N 03.11E) on July 02 1999 . An individual with small white tips on the outer primaries, a large white mirror on P10, no 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 continues on the upper mandible. P1 is still old.