Western Rockhopper Penguin

Identification

The western rockhopper penguin is the smallest of the yellow-crested penguins in its genus, measuring 45–58 cm in length and typically weighing 2–3.4 kg, though exceptional individuals may reach 4.5 kg. Its most distinctive features are its slate-grey upper parts contrasted with black and white plumage, bright yellow eyebrows that extend into long yellowish plumes projecting sideways behind a striking red eye. These eye-catching crests give the species its common name within the crested penguin group.

Range & Habitat

The western rockhopper penguin inhabits subantarctic waters around the southern coast of South America and nearby islands. It breeds on the Falkland Islands and on islands off Patagonia, with colonies ranging from sea level to cliff-tops and sometimes extending inland. Outside the breeding season, these penguins roam the offshore waters surrounding their colonies. The species was separated from its eastern cousin, the eastern rockhopper penguin, based on molecular phylogenetic research published in 2021; the two species occupy distinct geographic regions, with the western species confined to Cape Horn and the Falkland Islands while the eastern species ranges across the Southern Indian and Pacific Oceans.

Behaviour & Diet

Western rockhoppers earn their name from their distinctive behaviour: unlike many penguins that slide on their bellies or awkwardly climb over obstacles, these birds attempt to jump over boulders and across cracks. Their breeding season runs from September to November, during which two eggs are laid but typically only one is incubated. Incubation lasts 35 days, followed by 26 days of brooding the chick. The global population is estimated at roughly one million pairs.

These penguins employ sophisticated foraging strategies adapted to varying conditions such as sea ice abundance, prey availability, and breeding stage. They travel in groups and may venture up to 157 km from their colonies. Females typically make 11–12 hour daytime foraging trips involving multiple dives lasting around 12 hours, though occasional night dives occur at shallower depths. Their diet consists of krill, squid, octopus, lantern fish, mollusks, plankton, cuttlefish, and various crustaceans.

Best Time & Places to See It

The breeding season from September through November offers the best opportunity to observe western rockhoppers at their colonies on the Falkland Islands and Patagonian islands. During this period, birds return regularly to their nesting sites, making them more predictable and easier to locate. Outside breeding season, viewing becomes more challenging as birds disperse into offshore waters.

Photography Tips

The vibrant yellow eyebrows and distinctive red eye make striking photographic subjects, particularly in strong natural light that accentuates the contrast between their dark upper parts and white undersides. Colonial breeding sites offer opportunities for capturing behavioural shots, including their characteristic hopping locomotion. Early morning and evening light during the breeding season will best reveal the plumage details and personality of these charismatic small penguins.