biggest bird in the world

The biggest bird in the world is the ostrich. Native to Africa, the ostrich is flightless and can grow up to 9 feet (2.7 meters) tall and weigh over 300 pounds (136 kilograms). It is known for its powerful legs, which allow it to run at speeds up to 45 miles per hour (72 km/h), making it the fastest-running bird on land.