Ostrich: Ostrich are the largest living bird on earth. They may stand 8 feet tall and weigh as much as 345 lbs. Ostrich live in the desert of Africa and Arabia. They usually eat plants but will eat turtles and lizards. The ostrich can't fly but is known for it's running speed of up to 40 miles an hour. Ostrich are polygamous, each cock has from three to five hens that lay their eggs in the same nest. The cock as well as the hens take turns sitting on the eggs. The cock also protects and tend the chicks. The have good eyesight which helps them to escape their enemies, which are lion and man.