Emperor Penguin

Emperor Penguin facts at a glance

What is a group of emperor penguins called?

Explore more animal collective nouns and baby animal names .

Breeding in the cold

Emperor penguins are the only species that breeds during the Antarctic winter. After the female lays a single egg, she returns to the sea to feed while the male balances the egg on his feet under a flap of skin for about two months, fasting the entire time.

Surviving the freeze

To endure temperatures below -40°C and fierce winds, emperor penguins huddle together in dense groups, constantly rotating so each bird gets time in the warm center. This cooperative behavior is essential for survival and warmth.

Diving and feeding

Emperor penguins are exceptional divers, reaching depths of up to 500 m and staying underwater for more than 20 minutes while hunting fish, krill, and squid. Their solid bones and streamlined bodies make them powerful swimmers.

Conservation

Emperor penguins depend on stable sea ice to breed. Because climate change is reducing and destabilizing Antarctic ice, the species is increasingly threatened, and scientists warn that continued ice loss could sharply reduce their populations this century.

Did you know? Emperor Penguin facts

• Emperor penguins are the largest penguins, standing up to about 1.2 m tall.
• They breed through the brutal Antarctic winter, the harshest of any bird.
• Males incubate the single egg on their feet for around two months without eating.
• Huddling colonies share warmth, with birds rotating from edge to centre.
• Emperor penguins dive deeper than any other bird, beyond 500 m.
• They depend on stable sea ice, making them vulnerable to a warming climate.

Diet & feeding

Emperor penguins feed on fish, krill, and squid caught on deep dives beneath the sea ice, with diet shifting seasonally and by location.

Adaptations

• Dense, overlapping feathers and thick fat insulate against extreme Antarctic cold.
• Huddling behaviour conserves heat across the colony in winter.
• Deep-diving physiology and oxygen storage allow long dives for prey.
• A brood pouch lets the male shelter the egg and chick on his feet.

Behaviour & ecology

• Emperors breed in winter colonies on sea ice, males incubating while females feed at sea.
• Birds huddle and rotate position to share warmth in blizzards.
• They make long treks between colony and open water.
• Parents take turns foraging and feeding the chick.

Communication

• Distinct calls let mates and chicks find one another in a crowded, noisy colony.
• Vocal signatures identify individuals among thousands.
• Posture and movement coordinate huddling and pairing.

Habitat & range

Emperor penguins live around the coast of Antarctica, breeding on stable sea ice and feeding in the surrounding Southern Ocean.

Ecological role

As deep-diving Antarctic predators, emperor penguins link fish, krill, and squid to the ice ecosystem and are a key indicator of Southern Ocean and sea-ice health.

Conservation status of the Emperor Penguin

Sources & references

This guide is compiled and reviewed against established zoological and conservation references. Key sources for the Emperor Penguin:

• IUCN Red List of Threatened Species

  Conservation status (Near Threatened) reflects the IUCN Red List category for Aptenodytes forsteri.

• BirdLife International (2020). Aptenodytes forsteri. IUCN Red List of Threatened Species.

  Status (Near Threatened) and sea-ice reliance.

• Billerman, S. M. et al. (eds.). Birds of the World. Cornell Lab of Ornithology.

  Breeding biology and diving.

• Animal Diversity Web — Aptenodytes forsteri. University of Michigan Museum of Zoology.

  Life history, morphology, and range.

• Global Animal Guide editorial standards

  How we research, source, review, and update every guide for accuracy.