Thanks Karen. Wisconsin side of the River. Minnesota is just across the river. And yes, I was quite amazed to see them, as I thought these were ocean shore birds. And I still can't get over the tiny size of these guys. After looking at Georges shots of his shore birds, I thought they were like Chicken sized. Hard to tell size from a picture with no references. 
I happened to be shooting Cliff Swallows gathering mud in this spot and did not see them for ten minutes or more, then I saw a dot move. I could only tell they were birds after looking through the Bigma. Look for tiny, tiny birds.