How do penguins keep their eggs warm?

Penguins keep their eggs warm by using their body heat. Male emperor penguins, for example, balance the egg on their feet and cover it with a flap of skin called a brood pouch. This ensures the egg is insulated from freezing ground temperatures and protected from harsh winds. During this incubation period, males do not eat and rely on stored fat for survival, demonstrating remarkable dedication to their offspring.