The second-largest bird in the world is the EMU, which is a flightless bird native to Australia. It has three letters in its name and is also known as an emeu, which has four letters in its name. The EMU is the second-largest living bird by height, after the ostrich. It can reach up to 6.2 feet tall and can weigh up to 90 pounds. The EMU is a fast-running, powerful bird that can travel great distances at a time. It is also an important cultural icon of Australia, appearing on the Australian coat of arms and being featured on the reverse of the Australian 20 cent coin.