How do peguins keep their feathers dry?

Penguins keep their feathers dry through a combination of specialized adaptations and behaviors. Their feathers are tightly packed and water-resistant, thanks to a layer of oils that they produce from a gland near their tails. Additionally, penguins preen their feathers regularly to distribute this oil evenly, maintaining their waterproofing. This adaptation allows them to stay insulated and buoyant while swimming in icy waters.