Ducks (and many other birds) have a special skill called preening! This is something they do to clean their feathers using their beak. They activate a preen gland which releases an oily substance all over their body. This oil acts as an insulator—or something that can keep them warm and, mostly, waterproof!

Why do ducks clean themselves?

Preening helps them stay dry.

Preening is the process by which ducks groom themselves—getting rid of dust, dirt, and parasites from their feathers, while also helping to waterproof their outer layer.

What does it mean when a duck is preening?

Preening is a maintenance behaviour found in birds that involves the use of the beak to position feathers, interlock feather barbules that have become separated, clean plumage, and keep ectoparasites in check.