Apteryx australis, commonly known as the KIWI, is a species of flightless bird native to New Zealand. It is the only species in the genus Apteryx and family Apterygidae and is the smallest living ratite. The KIWI is an iconic symbol of New Zealand and is a national icon. It is also the country's national bird. The KIWI is a nocturnal bird with a long beak and a highly developed sense of smell. It feeds mainly on small invertebrates, such as worms, insects, and spiders. It is also known for its unique egg-laying behavior, laying eggs that are much larger than its body size.