Question

Why do penguins need to clean their feathers

Answer 1

Answer:

Preening is an activity used by many birds to groom their feathers. ... A gland near the base of the Adelie penguin's tail produces an oil that the penguin applies to its feathers. The oil keeps the feather smooth, clean and waterproof. The Adelie's beak is used to pick up the oil from the gland.