Kiwi are flightless birds endemic to New Zealand of the order Apterygiformes. The five extant species fall into the family Apterygidae and genus Apteryx. Approximately the size of a domestic chicken, kiwi are the smallest ratites. Wikipedia
Scientific name: Apteryx
Clade: Novaeratitae
Class: Aves
Domain: Eukaryota
Family: Apterygidae; Gray, 1840
Infraclass: Palaeognathae
Lower classifications