LBBG E757 7cy, June 17 2001, Missouriweg - Maasvlakte, the Netherlands.

E757, born and ringed at the Maasvlakte July 09 1995, now in it's 7th calendar year.
Its moulting it's head, as in common in most LBBG adults by June in the Netherlands. Within a few days, the feathers around the eye are shed, creating a naked circle around the eye. On average, this is the stage of wear as can be found in most adult LBBGs now.
Note the iris: not as intense yellow as suspected in 7cy, rather pale with a hint of blue. Iris colour may be related to seasonal changes?