Galapagos Penguin

The Galapagos Penguin is a small banded penguin restricted entirely to the Galapagos Islands, straddling the equator and making it the only penguin species that regularly ranges into the Northern Hemisphere. It shares the classic black-and-white banded pattern of its South American relatives, with a thin black band curving across the white chest, though it is the smallest species in this group.

Galapagos Penguins survive in a tropical setting thanks only to the cool, nutrient-rich waters of the Cromwell and Humboldt Currents, which bring cold water and abundant fish to the equatorial islands. Without this upwelling, the warm tropical waters surrounding the islands would be inhospitable to a penguin.

With one of the smallest total populations of any penguin species, the Galapagos Penguin is highly vulnerable to fluctuations in ocean temperature, particularly during El Niño events, which can drastically reduce its food supply.

Key field marks

• Small size, with a thin, sometimes broken, black band across the chest
• White facial stripe running from the eye around the black cheek
• Black upperparts, white underside, blackish bill

Similar species

• Humboldt and Magellanic Penguins are larger, occur only in mainland South America, and are never found on the Galapagos Islands, so range alone separates them.
• No other penguin species occurs within the Galapagos Islands, making identification straightforward by location.

The Galapagos Penguin is restricted to the Galapagos Islands, particularly the western islands of Fernandina and Isabela, where cold water welling up from the Cromwell Current keeps sea temperatures low enough to support the species despite the equatorial latitude. It nests in caves, crevices, and burrows dug into volcanic rock and lava along the shoreline.

The species is non-migratory and remains within the Galapagos archipelago year-round, closely tied to the availability of cold, productive water.

Voice

Galapagos Penguins give braying calls similar to other banded penguins, along with softer contact calls between mates and chicks.

Feeding

They forage close to shore, often in small groups, sometimes cooperatively herding schools of small fish such as sardines and mullet into shallow water before diving in to feed.

Nesting and breeding

Pairs nest in shaded lava crevices, caves, or burrows that protect eggs and chicks from intense equatorial sun. Breeding can occur more than once a year when food is abundant, but pairs may skip breeding entirely during poor food years such as El Niño events.