Ringed as 4cy at Zeebrugge (51.21N 03.11E) on July 07 1999 . An individual with clear white tips on the outermost primaries and a small white mirror on P10. There are no black markings on the bill. The iris is clear yellow, without speckling. AGAB was seen again on May 29 2003, still not started complete moult, as P1-P10 were all present.