Emperor Penguin: where and when to see them

The emperor penguin is the largest living penguin and the only one whose breeding cycle regularly spans the Antarctic winter. Most colonies depend on stable sea ice that remains intact long enough for chicks to develop. Adults have dark heads, pale bellies and yellow-orange neck patches. Their remarkable cold tolerance does not make them immune to environmental change: loss or early breakup of breeding ice can cause severe reproductive failure across affected colonies.

Size

110-120 cm tall

Weight

22-45 kg

Lifespan

15-20 years

Status

Near Threatened

After the female lays a single egg, the male balances it on his feet beneath a warm fold of skin while she returns to feed at sea. Incubating males fast and form shifting huddles that reduce heat loss. Parents later alternate feeding journeys and chick care. Chicks eventually gather in groups while adults forage. Vocal recognition helps partners and young locate one another within a crowded colony, where individual calls are especially important. Emperor penguins exhibit remarkable diving adaptations, including solid bones to resist pressure and the ability to reduce their heart rate during extended dives. Their huddling behavior is a highly coordinated effort where individuals constantly rotate from the outside to the warmer interior of the group.

• The male incubates the single egg on his feet.
• Breeding males can fast for several months.
• Huddles continually rearrange as birds adjust their positions.
• Chicks must develop suitable juvenile plumage before leaving the breeding ice.

October through December overlaps with late chick development and the beginning of the Antarctic visitor season, but most colonies remain beyond ordinary itineraries. Standard summer coastal travel offers only occasional distant encounters. Ice conditions, permits and logistics determine access, not a predictable public viewing season. Early summer trips might encounter adults returning to sea or newly hatched chicks huddled together. The challenging logistics of reaching their remote breeding grounds mean most encounters are distant, either from ice-breaking vessels or during helicopter excursions to specific sites, if permitted.

Emperors inhabit Antarctic coastal seas and breed predominantly on landfast sea ice, with a few colonies using other ice settings. Colonies can lie far from navigable water. Their dependence on suitable ice makes distribution and visitor access highly sensitive to annual conditions. These ice-dependent birds are uniquely adapted to the harsh Antarctic environment, living their entire lives in the Southern Ocean region. Their breeding colonies are often found in areas protected from strong winds, such as bays or behind icebergs.

They feed on fish, Antarctic krill and squid, with proportions varying among colonies and seasons. Adults bring food back internally and regurgitate it for chicks. Their marine feeding grounds may be distant from breeding colonies, requiring lengthy journeys across ice and open sea. They are skilled deep divers, often reaching depths of over 500 meters in search of prey. This species uses its powerful flippers to 'fly' through the water at speeds up to 12 km/h during pursuit.

Common name

Emperor Penguin

Scientific name

Aptenodytes forsteri

Animal group

Birds

Size

110-120 cm tall

Weight

22-45 kg

Lifespan

15-20 years

Status

Near Threatened

Identification

Its enormous size and softer yellow upper-chest shading distinguish it from the smaller king penguin, which has brighter orange neck patches and a longer-looking bill. Juveniles initially have a grey head with a white chin and throat, gradually acquiring the adult black head and yellow chest markings over several years. Their distinctive upright posture and large, streamlined body shape are unmistakable.