Water, water... where?

Is there a bird that looks like a seagull, sounds like a seagull, but isn't a seagull? If not, there are some very sad and confused seagulls in Casper. It's really depressing on two fronts-- one, you hear these seagulls and it reminds you of the beach, but you realize "oh, I'm in Wyoming"; second, these poor birds! They just fly around parking lots, probably wondering "where the heck is all the water?" Maybe I'll go out there with some fish and a kiddy pool. Now that's a good way to get killed.