Like all young waterfowl, ducks don’t have to be taught how to swim. A baby duck knows how to swim as soon as it hatches from the egg. The mother duck leads the ducklings to the water as soon as they can travel.
It will take a duckling six or more weeks before learning to fly. During their first few months, the young duckling lives on water insects, grasses and other kinds of plant life.
Ducks and most other water birds have a special way to keep dry. They use their bills to spread waterproofing oil over their feathers. The oil comes from a gland near their tails.–Dick Rogers