Over millions of years, with no mammal predators, kiwi adapted to life on the ground.
They make their homes in many different environments, from snowy mountain tussock lands to coastal sand dunes, from mossy forest floors to rough farmed grasslands.
Kiwi have been described as breeding machines – they produce huge eggs with the consistency of battery hens. Take away the predators, particularly stoats and dogs, and kiwi could be successful once again.
What came first – the chick or the egg?
Adult kiwi set up a territory, prepare a nesting burrow and then mate. When the female produces her huge egg (or two), in some species only the male that incubates it. When the egg hatches, a fully feathered chick emerges to face its first few days of life.