An order of large, long-necked, long-legged, flightless birds, found in South America. Known as rheas, they are sometimes called American ostriches, though they are in a separate order from true OSTRICHES.

Annotation

note entry term OSTRICH, AMERICAN: OSTRICHES see STRUTHIONIFORMES is available

DUI

D020311 MeSH Browser

CUI

M0029961

Previous indexing

Birds (1971-1998)

History note

2005 (1999)

Public note

2005; see RHEAS 1999-2004