Gulls !!!! Help !!!!

Amwell NR I have been there a 3 or 4 times in the last couple of weeks first for caspian twice failed then for glaucous gull scored then back for caspian probable fail 

Being a novice when it comes to gulls

and any birds actually 

when the Caspian gull was at amwell 

and was only seen feeding an hour before I arrived

I was in with a good chance of seeing it

But then I had to ID it

2 other birders was there and we all decided this was a good candidate

in-fact one of us felt he was sure

but it wasn't me 

comments welcome !

also this scaup  which was very nice