You have just officially been "mooned" by a duck! (For those of our overseas friends who are at a loss of understanding here ... just chalk it up to the weird American sense of humor.)
Now on a more serious yet still light hearted note. The following are pictures of a male mallard duck. A very common duck over here, I thought perhaps our over the sea members might be interested in seeing one. All 3 pics are of the same bird. The iridescent colors on his head is the result of light striking it at different angles and getting refracted.