Ducks are the highly familiar kinds of birds, known for their uniqueness. These are the omnivorous birds, which eats grass, insects, seeds, aquatic plants, fruit, fish, crustaceans, nuts and other sort of food. These can be easily kept as the pets as these can adapt well to several food sources. Ducks are the birds of special variety that can live for various years. The birds have weeded feet and water-proof feathers.