The largest living bird in the world is the ostrich (Struthio camelus). Native to Africa, ostriches are flightless birds characterized by their long legs and necks, as well as their large bodies that can weigh up to 350 pounds (158 kg). They can reach heights of up to 9 feet (2.7 meters), making them the tallest bird species. Ostriches are known for their fast running abilities, capable of reaching speeds of up to 45 miles per hour (72 km/h) over short distances. Their unique adaptations help them thrive in open savannahs and grasslands where they primarily feed on plants and insects.