Macaroni penguins, otherwise referred to as eudyptes chrysolophus, spend most of their time in cold oceans, have an incubation period of 33 to 40 days and eat a diet of squid and krill. Macaroni penguins have yellow-orange crests and black plumes. They weigh an average of 12 pounds and have an average height of 28 inches. Macaroni penguins are good swimmers, and they have good vision, so they hunt proficiently at night.
Macaroni penguins are native to the cooler regions of sub-Antarctic, Antarctic Peninsula and South America. They live for 15 to 20 years. They return to land during the summer months in order to breed, with both parents incubating the eggs, which they lay two at a time. Chicks hatch after four weeks and become independent from their parents in 10 weeks. Some of their breeding grounds include Chile and Falkland Islands.
Macaroni penguin predators include leopard seals, killer whales and sharks. Birdlife International regards the species as vulnerable, and the Antarctic Treaty of 1959 protects the penguins legally. They are subject to population decline due to the destruction of their natural habitat, oil pollution and encroachments into their nesting areas. As of 2015, the total population of the species is around 18 million.