Ratite:
A ratite is any of a diverse group of large, flightless birds of the superorder Palaeognathae.
en.wikipedia.org
鸵鸟目:
鸵鸟目（Struthioniformes）在动物分类学上是鸟纲古颚总目下中的一个目，包括很多巨大不能飞的鸟，如鸵鸟。
zh.wikipedia.org
This article uses material from the Wikipedia articles %@, which are released under the Creative Commons Attribution-Share-Alike License 3.0.
Ratite鸵鸟目