Ostrich, e.g

• Kiwi, e.g.
• Moas
• Emu or ostrich
• Rhea or ostrich
• Kiwis
• Elephant birds
• Ostrich, e.g.
• Rhea or cassowary

Wikipedia Word definitions in Wikipedia
A ratite is any of a diverse group of large, flightless birds of the infraclass Palaeognathae . The systematics involved have been in flux. Some sources state that ratites include all the flightless birds of the Palaeognathae; previously, all these birds ...

Wiktionary Word definitions in Wiktionary
n. A bird of the order of Struthioniformes, a diverse group of large running, flightless birds, mostly extinct, but including the cassowary, elephant bird, emu, kiwi, moa, ostrich, rhea and tinamou