Lesser Black-backed Gull NP8 8cy, April 29 2004, Missouriweg, Maasvlakte, the Netherlands (51.59N,04.02E). 

An adult ringed left orange NP8 in white code. This bird was ringed as pullus July 11 1997 at Maasvlakte, now in its 8cy. The primary tips are relatively small and this bird has a mirror on both P10 and P9.