The RHEA is a flightless bird of South America, belonging to the family Rheidae. It is native to Argentina, Bolivia, Brazil, Paraguay, and Uruguay. It is the largest bird in South America and is closely related to the ostrich and emu. The RHEA is an omnivore, eating a variety of plants, insects, and small animals. It is a fast runner and can reach speeds of up to 40 mph. It is also a good swimmer and can dive underwater to escape predators. The RHEA is an important part of the South American ecosystem and is considered a vulnerable species due to habitat loss and hunting.