There's a Duck in our Pool!

I looked out my kitchen window at lunch today and saw a duck in our pool. I was so shocked I called Chuck at work and asked him what to do. He said, "take a picture of it". So I did! Here is the picture that I took. When Chuck got in from work he was working in the back around the pool and found some duck droppings on our pool deck. From now on the duck is not welcome. I have been told to scare him off if he comes around again. At least I have a picture - I don't really want ducks taking over my pool, I enjoy it too much in the summer!