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Wiktionary
elephant bird

n. Any of the very large extinct flightless birds that comprise the genera ''Aepyornis'' and (taxlink Mullerornis genus noshow=1) within family Aepyornithidae, and lived in Madagascar until the 17th or 18th century; especially (taxlink Aepyornis maximus species noshow=1).

WordNet
elephant bird

n. huge (to 9 ft.) extinct flightless bird of Madagascar [syn: aepyornis]

Wikipedia
Elephant bird

Elephant birds are members of the extinct family Aepyornithidae. Elephant birds were large to enormous flightless birds that once lived on the island of Madagascar. They became extinct, probably in the 17th or 18th century, for reasons that are unclear, although human activity is the suspected cause. Elephant birds comprised the genera Mullerornis and Aepyornis. Aepyornis was among the heaviest of birds (the extinct Dromornis stirtoni of Australia reached a similar weight). While they were in close geographical proximity to the ostrich, elephant birds' closest living relatives are kiwis, suggesting that ratites did not diversify by vicariance during the breakup of Gondwana but instead evolved from ancestors that dispersed more recently by flying.

Usage examples of "elephant bird".

Or the elephant bird of Madagascar, extinct a thousand years in the twentieth, the creature that had given rise to Sinbad's legend of the roc.