Ruddy Ducks have stiff tails, unlike some other birds in North America.They have fan shaped tails and quite small bodies, which make it easy to identify them in places. Although their tiny wings help them fly super fast, they like to spend a lot of time in the water.They are marvelous divers! When danger approaches, they dive underwater and swim away quickly to safety. These particular ducks like to eat the weeds growing on the bottom of lakes. If there aren’t very many weeds down there, they eat insects and crustaceans.