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Aptenodytes patagonicus

King Penguin

Sub-Antarctic 90–100 cm Least concern

Second-largest penguin — almost as tall as the Emperor. Rearing a single chick takes over a year of shared parenting, one of the longest investment periods of any bird.

Royalty of the Sub-Antarctic

The King Penguin (Aptenodytes patagonicus) is often mistaken for the Emperor at first glance — both are tall, sleek, and adorned with vivid orange-yellow auricular patches. At 90–100 cm and up to 18 kg, the King is the second-largest penguin, outweighed only by its Antarctic cousin.

Kings breed on sub-Antarctic islands — warmer, greener, and more accessible than the Emperor’s frozen breeding grounds. The largest colonies are on South Georgia, where nearly 450,000 pairs gather in valleys that echo constantly with the species’ trumpeting calls.

A Marathon Breeding Cycle

King Penguins have one of the most unusual breeding cycles in the animal kingdom. Raising a single chick takes 14–16 months — so long that it spans more than one calendar year. As a result, successful parents can only breed twice every three years.

The cycle:

  1. November–December — egg laid; incubated in turns on the feet
  2. January–February — chick hatches; fed by both parents in alternating foraging trips
  3. Winter — chick enters a long semi-fasting period, huddling in large crèches
  4. Spring — parents return, chick regains weight
  5. October–November — chick fledges and heads to sea

Spectacular Colonies

King Penguin colonies are among the most visually overwhelming wildlife experiences on Earth. At St Andrews Bay on South Georgia, over 150,000 adults and brown-fluffy chicks pack a single beach — a living carpet that stretches to the horizon.

“Standing at the edge of a King Penguin colony is like standing on another planet.” — Explorer and naturalist Sir David Attenborough

Conservation

Currently Least Concern with a stable or slightly growing global population (~2 million individuals). However, climate modelling suggests that warming ocean temperatures will shift the fish schools Kings rely on further south — potentially forcing colonies to relocate or face food shortages within decades.

Where to see them: South Georgia Island (accessible by expedition cruise) hosts the world’s largest and most spectacular King Penguin colonies.