Dear all, finally the first entry.
This bird look a bit strange but to me it looks like a herring gull. There's a new tertial, the head is heavy the dark area around the eye. But the new tertial looks more like a replacement, the pale window is obvious in both webs, there's a light end in the outer pimaries, the tail design (maybe a shark biten him while sleeping in the sea :) is also good for HG and the pink bill base is pink. Alltogether make hering gull the best option.