Ducks get oil on their feathers from their uropygial gland, also known as the preen gland. This gland produces an oily substance that the duck then spreads across its feathers using its beak during preening.
The Preening Process: A Duck's Natural Waterproofing
The process is vital for their survival. Ducks and geese use their beaks to meticulously spread the oil from their uropygial gland across their feathers. This oil acts as a natural waterproofing agent, protecting them from the elements and keeping them warm.
Why is this important?
- Waterproofing: The oil prevents water from penetrating their feathers, keeping them dry and insulated.
- Insulation: The oil helps to trap air between feathers, providing additional insulation and warmth, especially in cold water.
- Feather Condition: The oil also helps keep the feathers in good condition, preventing them from becoming brittle and damaged.
Young Ducks and Waterproofing
It's important to note that young ducklings and goslings are not fully waterproof at first. Their waterproofing abilities increase as they mature and learn to effectively preen and distribute the oil from their uropygial gland.
In short: Ducks obtain the oil that waterproofs their feathers from a special gland located near their tail, then carefully spread it during grooming.
