Baltic Gull, Larus fuscus fuscus. 2cy?
This Baltic shows an amazing state of moult in primaries:
Highly worn feathers -- P1-P4 and P9.
Moderate worn feathers -- P5-P8 and P10.
Note that P10 seems to be 2nd generation, unlike P1-P4 (3rd generation?). This pattern indicates two irregular moult waves (most probably in winter and spring).