An ostrich’s leg bones are different from those of other birds. Their backbones are also fused which gives them extra strength. The ostrich also has two toes on each foot instead of the typical four found on other birds. This helps them to balance their large bodies on top of their long legs.
When an ostrich wants to sit down it bends its legs at the knees and rests its body on the ground. To stand up again the ostrich uses its powerful leg muscles to push off the ground and raise its body into the air.
The ostrich is the largest bird in the world and its legs are specially adapted to help it move quickly and easily across the ground. The ostrich can reach speeds of up to 70 kilometers per hour (43 miles per hour) when it is running.
The ostrich is a interesting bird because it cannot fly. This is because its wings are too small to lift its large body into the air. Instead the ostrich uses its powerful legs to run away from predators or to chase after prey.
