Lesser Black-backed Gull graellsii E920 8cy, March 18 2002, Missouriweg, Maasvlakte, the Netherlands (51.59N,04.02E). 

An adult female ringed, left orange E920. Note the friendly facial expression and the slender more elongated bill. The white mirror is not connected to the white tip but separated by a sub-terminal black band. Ringed as a pullus on the nest July 10 1995.