Mallard, Anas platyrhynchos, Pato-real
(Photo by Maria Bedacht, taken in Campinas, São Paulo, Brazil - Dec 2004)
The Mallard was described by Linnaeus in 1758. (See: Birds of North America, Alsop, 2002, pg 173) This guy is way out of his normal range. He must have escaped from a local collector.
