Earlier this year, someone dumped 9 young muscovies at the lake. There was a wide variety of colors among them. They stuck together and at least 7 of them made it. Now they are older juveniles. They are thriving on their own at the lake. This one is a pretty color knows as Swedish blue. There may be some of that breed in its ancestry. You can tell it is a Muscovy by the elongated body and the beginnings of the Muscovy warts at the base of the bill along with the color of the bill.
Juvenile Muscovy Duck (Cairina moschata domestica)