LBBG 5cy BLAR, August 01 2003, Zeebrugge, Belgium.
A blue ringed sub-adult LBBG, ringed as pullus in the colony of Zeebrugge, Belgium (51.21N 03.11E) on July 09 1999. It has a low primary moult score (PMS = 0), with P1-P10 still old. It has clear yellow bill and legs. The red spot on the bill is confined to the lower mandible and there is no black on the bill. The white-yellow iris shows limited speckling.