Tern with a Ring

I didn't notice it at the time but this Common Tern has a ring on its left leg. Not enough detail to get the information but as these terns quite often hang around the same area all summer I'll have to see if I can find it again.

[Maggiemae]

Super fine picture of the well known tern. Lovely graceful seabird!

[Elisabeth Sæter]

Great shot