This looks to me like a Khaki campbell mallard. Mallards come in several colour versions! I liked the way his colours matched the water in the sun. Taken at Oswaldtwistle mills, lancashire, uk. Thanks to voluntary ranger for remin ding me that Kaki cambells are mallard crosses.Taken with a canon 450d and a canon 100-400mm L series lens @170mm. Colours more or less straigt off the camera and then I added a texture I made in art rage.
Larger is nice.