How do birds escape from predators in open habitats?

Large birds of open landscapes, such as ostriches, are incapable of flying, have powerful long limbs with claws and a long neck. Their great growth allows you to notice a predator from a distance and flee to escape from it. In the event of an attack, the ostrich defends itself by striking powerful legs. The much smaller steppe bustard has a plumage color that merges with the tone of the vegetation. Hiding in it, it hides from danger. Discovered by a predator, the bustard flies away or runs away on its powerful legs.