King Penguin: where and when to see them

The king penguin is the second-largest penguin, with a silvery back, black head and bright orange patches around the neck and lower bill. Its great breeding colonies belong principally to subantarctic islands, not the Antarctic continent. Birds commute between land-based colonies and distant marine feeding areas. An unusually prolonged breeding cycle produces colonies containing adults, eggs and chicks at different stages, rather than a single neatly synchronized annual cohort.

Size

85-95 cm tall

Weight

9-16 kg

Lifespan

15-25 years

Status

Least Concern

King penguins gather in dense colonies but do not construct nests. Each parent takes turns balancing a single egg on its feet beneath a warm fold of skin. After the chick grows large enough, it joins groups of other chicks while adults forage at sea. Parents and offspring recognize one another through calls amid the colony's noise. The lengthy rearing period can extend through winter, when chicks endure long intervals between meals. The incubation period for a single egg lasts about 55 days, with parents taking turns. Chicks, once large enough, form 'crèches' for protection while both parents forage at sea, significantly increasing their chances of survival against predators.

• It is the second-largest living penguin species.
• A single egg is incubated on the parents' feet.
• Its breeding cycle commonly takes longer than one year.
• Brown, woolly-looking chicks were once mistaken for a separate penguin species.

November to March provides the main visitor access window to subantarctic colonies associated with Antarctic itineraries. Breeding stages overlap because the cycle lasts longer than a year. This travel period should not be presented as a single hatching season, and mainland Antarctic visits rarely offer comparable opportunities. The extended breeding cycle means that all stages, from eggs to large chicks, can be observed simultaneously in colonies during the austral summer. Late summer (February-March) offers excellent opportunities to see large numbers of juvenile 'oakum boy' chicks, identifiable by their thick brown down.

Breeding colonies occupy ice-free shores and low coastal plains on subantarctic islands, often beside beaches used for access to the sea. Birds feed in cold Southern Ocean waters. They are not characteristic breeders of the continental Antarctic coast or most Antarctic Peninsula landing areas. King penguins are absent from the Antarctic continent and its surrounding islands, preferring warmer, subantarctic environments. They favor slopes with tussock grass and a reliable source of fresh water, which supports their large breeding colonies.

King penguins feed mainly on small fish, especially lanternfish, with squid also important in some regions or seasons. Adults capture food at sea and return to provision chicks. Their feeding journeys respond to shifting ocean fronts and prey availability, sometimes taking them far from colonies. King penguins are expert divers, often reaching depths over 100 meters and remaining submerged for several minutes to pursue prey. Their diet is largely driven by the availability of myctophid fish, which form dense schools in the Southern Ocean.

Common name

King Penguin

Scientific name

Aptenodytes patagonicus

Animal group

Birds

Size

85-95 cm tall

Weight

9-16 kg

Lifespan

15-25 years

Status

Least Concern

Identification

Compared with the larger emperor penguin, the king penguin has more vivid orange neck patches and a longer, slimmer bill with a conspicuous orange lower-bill stripe. Juvenile king penguins are distinguished by their entirely brown, woolly down, leading to their 'oakum boy' nickname. Unlike some other penguin species, king penguins do not have distinct plumage differences between sexes, making visual sex identification challenging.