I have never seen a bufflehead duck in the wild, that is awesome! Even when I live back east not one time... Great pictures, that thing was a speed demon crossing the pond!
The moon halo is really cool. I've heard it called a moon dog before, although I have no idea what the proper name is. That picture is awesome, well done!
They seem to be more rare than the other ducks.. just passing through on their migration I think.
Oh cool.. yeah it was quite the sight.