Caspian Gull from Paris (1 Viewer)

[L'argonnais]

Hello,
I have seen that Gull 30 Km east from Paris, France, last month. I wonder if it is a Caspian Gull. But I m absolutely not sure (never sure with all the gulls !!!!!!!!!!!!!!! )
Unfortunately, I do not have any picture when it was on the beach immobile ; always moving
Any help is welcome,
JR

 

[lou salomon]

looks mostly good for Caspian Gull but bill shape and shortish legs may indicate it is a hybrid. An open wing shot always helps...