EVERYDAY SCIENCE

Detailed explanation-1: -ostrich, (Struthio camelus), large flightless bird found only in open country in Africa. The largest living bird, an adult male may be 2.75 metres (about 9 feet) tall-almost half of its height is neck-and weigh more than 150 kg (330 pounds); the female is somewhat smaller.

Detailed explanation-2: -With its long neck and brown plumage, the ostrich is the tallest and heaviest bird on the planet.

Detailed explanation-3: -With their incredibly long legs and slender necks to match, the ostrich is the largest bird in the entire world, standing at almost 9 feet tall and weighing around 250 to 300 pounds. And almost everything about the ostrich is big!

Detailed explanation-4: -Emu is the second largest bird in the world after ostrich. It is a flightless bird. It is endemic to Australia where it is the largest native bird.

Detailed explanation-5: -The correct answer is option A. The common ostrich (Struthio camelus) is the largest extant bird species in the world.