ocr: Duck Ducks are short-necked waterbirds which belong to the same family as geese and swans. They are well adapted for swimming and diving, using their webbed feet to move through the water. The feathers of ducks are waterproofed with a thick layer of underlying down. There are two groups of ducks - diving ducks and dabbling ducks. This second group do not dive, but instead the feed on the surface of the water.