What other birds are kiwi related to?

The kiwi is a flightless bird native to New Zealand. It is related to various bird families, including:

- Moas: Moas are extinct, flightless birds that were once abundant in New Zealand. They are closely related to kiwis and share many anatomical features.

- Tinamous: Tinamous are small to medium-sized ground birds found in South America. They are distantly related to kiwis and share certain evolutionary characteristics, such as reduced wings.

- Rheas: Rheas are large, flightless birds native to South America. They are distantly related to kiwis and belong to the same avian order, Rheiformes.

- Cassowaries: Cassowaries are large, flightless birds found in the rainforests of New Guinea and northeastern Australia. They are distantly related to kiwis and belong to the same avian order, Casuariiformes.

- Emus: Emus are large, flightless birds found in Australia. They are distantly related to kiwis and belong to the same avian order, Casuariiformes.

Additionally, kiwis are classified within the order Struthioniformes, which includes ostriches, rheas, emus, and cassowaries. These birds are all flightless and share certain anatomical similarities.