Chinstrap penguins are one of the most easily identifiable of all of the penguin species, mainly due to the marking on their chins. Chinstrap penguins are also known to congregate together in their millions on small Antarctic islands. There are believed to be more than 7 million breeding pairs of chinstrap penguins.
Due to the fact that there are few large animals inhabiting the frozen South Pole, the chinstrap penguin has few natural predators. Leopard seals, killer whales and the occasional passing shark are the main predators of the chinstrap penguin.
Female chinstrap penguins lay 2 eggs in a nest made out of stones on one of the rocky Antarctic islands, in November or December. The male chinstrap penguin and the female chinstrap penguin both take it in turns to keep the eggs warm, with the eggs hatching after about a month. The chicks stay in the nest until they are about a month old and are fed by both the female chinstrap penguin and the male chinstrap penguin.