:''For the brand of yerba mate, see
Ñandú (mate).''
The 'Rhea', also known as 'ñandú' (
pronounced ) in Spanish, or 'ema' in Portuguese, is a large flightless
ratite bird native to
South America. The name was given in 1752 by
Paul Mohring; his reason for choosing this name, from the
Rhea of classical mythology, is not known.
Rheas are polygamous, with males courting between two and twelve females. After mating, the male builds a nest, in which each female lays her eggs. The male incubates from ten to sixty eggs; the chicks hatch within 36 hours of each other. The females, meanwhile, may move on and mate with other males. While caring for the young, the males will charge at anyone — including humans and female rheas — who approaches the chicks.
Rheas are
omnivorous, preferring broad-leafed plants, but also eating seeds, roots, fruit, insects, and small vertebrates.
Rheas have only three toes. This is an adaptation which allows them to run faster than if they had four.
Rhea farming

Head of a Rhea (detail)
Rhea are farmed in North America and Europe (as are the
Emu and the
Ostrich). While the main produce are meat and eggs, rhea oil is also used for cosmetics and soaps.
External links
★
Rhea videos on the Internet Bird Collection