I photographed these Rudy Ducks back in late December at the Edwin B. Forsythe National Wildlife Refuge. There were large groups of them swimming and feeding. The Rudies are one of the ducks that over Winter at the refuge. They are one of my favorite ducks to photograph. Rudy Ducks are quite active and dive underwater for their meals giving you more photo opportunities. These were swimming ahead of a large group, rapidly down one of the channels going by larger groups.