What is an ostrich*An ostrich is a large, flightless bird native to Africa. It is known for being the largest bird in the world and for its impressive running speed. Ostriches belong to the ratite family, which also includes emus, kiwis, and other flightless birds. They have long, powerful legs designed for running and can reach speeds of up to 70 kilometers per hour (43 miles per hour). Ostriches have a distinctive appearance with a long neck, large eyes, and a small head. Their feathers are usually brown or grey, and males have bold black-and-white coloring on their tail feathers and wings.