LBBG 6cy EP97, Missouriweg - Maasvlakte, the Netherlands, April 29 2002.

An adult bird ringed left orange EP97, ringed as pullus at the nest, July 2 1997, now in 6cy. 

Note the hint of black markings on the bill. The moult of the head has started around the eye, but in general the complete upper-parts and wing-coverts look very neat and tidy.