LBBG adultEC07, May 13 2002, Missouriweg, Maasvlakte, the Netherlands (51.59N,04.02E). 

Ring data will be added when available.

The head moult has started around the eye, as the bare parts indicate. Interestingly, the moult reveals / accentuate the orange orbital ring, a rare phenomenon in Lesser Black-backed Gulls. We estimate LBBG with orange orbital rings to occur in < 0.5% in the Maasvlakte colony. EC07 has the p10 mirror separated from the white tip by a sub-terminal band.