The largest living species of bird is the ostrich (Struthio camelus). Native to Africa, ostriches are flightless and are known for their impressive height, which can reach up to 9 feet tall. They also have strong legs, allowing them to run at speeds of up to 45 miles per hour, making them the fastest birds on land. Their adaptations to their environment include long necks to spot predators and a unique mating system where males are known to perform elaborate displays to attract females. Their feathers, while not suited for flight, are still used for insulation and protection.