Ostrich is not just the largest extant bird on earth. There is much more interesting stuff to learn about it. So here it is...
The ostrich is the fastest two-legged runner in the whole world. It can attain a speed of 45 miles per hour which is about twice to what the fastest human can attain. The intestine of an ostrich is about twice as long as that of a human.
Ostriches never need to drink water. Some water is made internally in their system and the rest of water is extracted from the vegetation they eat.
Contrary to an immensely popular myth created by ancient Roman encyclopedist and philosopher Pliny the Elder, an ostrich does not bury its head in sand at the first sign of danger. However, it does stretch its long neck flat on sand while sleeping which might look like it has buried its head in sand from a distance. Ostrich population wouldn't have survived for 120 million years by burying its head in sand.
Did you know that the brain of an ostrich is smaller than either one of its eyeballs and each of its each eye is the size of a billiard ball? It kicks forward. Seems strange?
Some males reach a height of 8 feet. It belongs to the Ratite family, which means flightless bird. This is no more a little-known fact that egg of an ostrich is the largest of all eggs, but did you know that it is in fact the smallest egg in relation to size of the bird?