SpeciesEmperor Penguin
Near Threatened

Emperor Penguin

Aptenodytes forsteri

About the Emperor Penguin

The Emperor Penguin (Aptenodytes forsteri) is the tallest and heaviest of all living penguin species, standing around 1.1 to 1.3 meters tall and weighing up to 40 kilograms. It breeds exclusively on the sea ice surrounding Antarctica, forming dense colonies where adults huddle together through winter temperatures that can drop below minus 60 degrees Celsius. As both predator and prey, Emperor Penguins are a keystone part of the Southern Ocean food web, feeding on fish, squid, and krill while supporting populations of leopard seals and orca.

The species is listed as Near Threatened on the IUCN Red List, with climate change identified as the central long-term threat. Accelerating sea ice loss in the Bellingshausen Sea has already caused near-total breeding failure in some colonies, and a 2023 study published in Nature Climate Change found that all Emperor Penguin colonies could face quasi-extinction by 2100 under current greenhouse gas emission trajectories. Colonies also face pressure from commercial krill fishing, which reduces prey availability, and from increasing human disturbance linked to tourism and research activity in the region.

Things worth knowing

  • Emperor Penguins are the only bird species that breeds during the Antarctic winter, with males incubating a single egg on their feet for around 65 days without eating.
  • They are capable of diving to depths exceeding 500 meters and can hold their breath for more than 20 minutes, making them among the deepest-diving birds on Earth.
  • A breeding male may lose up to 45 percent of his body weight during the incubation period, surviving entirely on fat reserves while shielding the egg from polar winds.
  • Emperor Penguins have a heat-exchange system in their blood vessels that recovers up to 80 percent of the heat from blood flowing to their feet, preventing dangerous heat loss on ice.
  • Satellite imagery has become a primary tool for monitoring Emperor Penguin colonies, since guano stains on sea ice are visible from space and allow census counts without physical disturbance.
  • In 2022, four previously unknown Emperor Penguin colonies were identified in Antarctica using ESA Copernicus satellite data, bringing the known total to around 66 colonies.
Who protects them

0 organizations protect the Emperor Penguin

No projects have listed this species yet. If you run a project that protects the Emperor Penguin, you can add it to Wildlife Connect.