Details
Rhea americana
The greater rhea is a large flightless bird that walks in groups across South American grasslands. Long legs and neck suit open country, and the diet is mainly plant-based.
Map: Ecoregions 2017 © RESOLVE (CC BY 4.0) · Natural Earth (PD)
It uses Neotropical pampas, grasslands, open woodland, and ranchland. Open landscapes with clear sightlines allow flocks to walk while feeding.
Length is 127-140 cm and weight 20-40 kg. It has soft grey-brown plumage, long legs, a long neck, and small wings used for balance while running.
Diurnal birds live in herds. During breeding, males hold territories and several females may lay eggs in a single male's nest.
A herbivore, it feeds mainly on grasses, leaves, seeds, and fruit. Small animals such as insects may be taken, but plants dominate the diet.
The male builds a ground nest and incubates a large clutch. After hatching, he leads and defends the chicks.
It is listed as Near Threatened. Conversion of grassland, hunting, and egg collection contribute to local declines.
