All penguins are fantastic swimmers and the rockhopper penguin is no exception. On Campbell Island, predation by New Zealand sea lions of adult eastern rockhopper penguins is the most important driver of the ongoing decline of the main study colony.
These penguins are among the most numerous on the planet, but their population is at-risk.
The Antarctic Treaty of 1959 makes it illegal to harm, or in any way interfere with, a penguin or its eggs. They rely on their parents to feed them fish through regurgitation for about a month. Size H: They lay mainly in the first-half of November, 12-21 days after females return.
Marchant, S. On average, southern rockhoppers dive to 20 or 30 metres but a maximal dive depth of 113 metres was recorded in one study.
Notornis 31: Whether the animal is solitary or sociable. Also like other penguins, Rockhoppers can alter the shape of the lenses in their eyes, giving them good vision both above and below the water.
Usually, these penguins feed on krill, squid and small fish. Moors, P.
The female lays two eggs, one smaller than the other. All 18 penguin species are legally protected from hunting and egg collecting.
Leave this field blank.All Penguin Species - Species List
Polar Biology 40: The preferred food of this animal. Food Small fish, squid, octopus, and krill-like crustaceans were found in diet samples from adult eastern rockhopper penguins collected during the chick-rearing period on Campbell Island.