what family do Kiwi and the common ostrich belong to?
Kiwi Kiwi (pronounced ) or kiwis are flightless birds native to New Zealand, in the genus Apteryx and family Apterygidae. Approximately the size of a domestic chicken, kiwi are by far the smallest living ratites (which also consist of ostriches, emus, rheas, and cassowaries), and lay the largest egg in relation to their body size of any species of bird in the world.
Bristlebird The bristlebirds are a family, Dasyornithidae, of passerine bird. There are three species in one genus, Dasyornis. The family is endemic to Australia. The genus "Dasyornis" was sometimes placed in the Acanthizidae or, as a subfamily, Dasyornithinae, along with the Acanthizinae and Pardalotinae, within an expanded Pardalotidae, before being elevated to full family level by Christidis & Boles (2008).