Wasn't emu originally a flier?

• Common waterbird

Wikipedia Word definitions in Wikipedia
The mute swan ( Cygnus olor ) is a species of swan and a member of the waterfowl family Anatidae . It is native to much of Europe and Asia, and (as a rare winter visitor) the far north of Africa. It is an introduced species in North America, Australasia ...

Wiktionary Word definitions in Wiktionary
n. a white swan, ''(l mul Cygnus olor)'', found throughout Europe and much of Asia, having a distinctive orange bill with a black tip; it is not actually mute, but is not very vocal.

WordNet Word definitions in WordNet
n. soundless Eurasian swan; commonly domesticated [syn: Cygnus olor ]

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Mute \Mute\, a. [L. mutus; cf. Gr. my`ein to shut, Skr. m[=u]ta bound, m[=u]ka dumb: cf. OE. muet, fr. F. muet, a dim. of OF. mu, L. mutus.] Not speaking; uttering no sound; silent. All the heavenly choir stood mute, And silence was in heaven. --Milton. ...