Great or lesser black backed gull? Poland (1 Viewer)

[misikuru]

Hello. What species are these gulls? The great black backed or the lesser black backed? I couldn't get to see the legs of the adults, but I'm guessing at least the first two are the great black backed, considering the stronger bill. Can someone confirm?

The photos taken on 21.06, lake by the Baltic sea, Western Pomerania, Poland.

 

[misikuru]

Here's a photo I took a few days later, at the same place. Here I can see it's pinkish legs, but I don't think it's the same individual.

 

[Gander]

I'd say Great BBG. That is a big, heavy club of a bill.

 

[misikuru]

Thank you, Gander!

 

[lou salomon]

All dark mantled gulls are GBBG. In the adults you can also discern the large all white tip to outermost primary.

 

[misikuru]

Thank you, lou salomon! It'll help future identifications!