What is the largest species of bird?

The largest species of bird is the ostrich (Struthio camelus), native to Africa. Adult male ostriches can grow up to 9 feet (2.7 meters) tall and weigh as much as 340 pounds (155 kilograms). Despite being flightless, they are fast runners, capable of reaching speeds up to 45 miles per hour (72 kilometers per hour). Ostriches are omnivores, feeding on a variety of plants, seeds, and small animals. Their powerful legs help them defend against predators, capable of delivering strong kicks.