Emu, e.g

• Cassowaries
• Kiwi, e.g.
• Rhea, e.g.
• Flightless birds having flat breastbones lacking a keel for attachment of flight muscles ostriches
• Emu or kiwi
• Kiwi, e.g
• Moas
• The kiwi is the smallest one

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

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Ratite \Rat"ite\ (r[a^]t"[imac]t), a. (Zo["o]l.) Of or pertaining to the Ratit[ae]. -- n. One of the Ratit[ae].