The RHEA is a large bird that is native to South America and resembles an ostrich. It is the largest bird in the Americas and is related to the ostrich, emu, and cassowary. The RHEA is a flightless bird and can reach up to 6 feet tall and weigh up to 40 pounds. It has long legs and a long neck, and its feathers are brown and white. The RHEA is a herbivore and feeds on grasses, leaves, and fruits. It is also known for its powerful running ability and can reach speeds of up to 40 miles per hour.