Is a flight less bird of south America it look like a small ostrich?

Yes, the flightless bird you're referring to is likely the rhea, which is native to South America. Rheas are large, Flightless Birds that resemble smaller ostriches, with long legs and necks, and a similar body shape. They are found in open grasslands and are known for their speed and ability to run quickly to escape predators. Unlike ostriches, rheas are social birds often seen in groups.