The ostrich is a bird that lives in Africa and belongs to the group of runner birds, the largest
living bird on earth today. The African ostrich that now lives in the Sahara desert could also be found in Western Asia in the past.
The male reaches a height of 210 to 275 cm, weighing 100-130 kg, but it can reach also 150 kg;
females are smaller, weighing 90-110 kg; their height ranges from 175 to 190 cm.
Ostriches live in nomadic groups of 5 to 50 birds. When threatened, the Ostrich will either hide itself by lying flat against the ground, or will run away. It also defends itself by attacking with a kick from its powerful legs.
Ostrich feeds mainly on seeds, roots, grass, fruit and flowers. Occasionally they also eat insects such as locusts. Lacking teeth, they swallow pebbles that act as gastroliths to grind food in the gizzard. An adult Ostrich carries about 1 kilogram (2.2 lb) of stones in its stomach.
The female Ostrich lays her fertilized eggs in a single communal nest, a simple pit, 30–60 cm deep and 3 m wide. The incubation period is 35 to 45 days. Typically, the male defends the chicks and teaches them to feed, although males and females cooperate in rearing chicks.