What is bigger in size an emu or an orstrish?

An ostrich is significantly larger than an emu. Adult ostriches can reach heights of up to 9 feet and weigh between 220 to 350 pounds, while emus typically stand about 5 to 6 feet tall and weigh around 100 to 130 pounds. This size difference makes ostriches the largest living birds in the world, whereas emus are the second largest.