It had three toes, and is classed with the cursorial birds (ostrich, &c.).
cursorial adaptations in birds—limb proportions in the skeleton of Geococcyx.
It may well have been the competition of the horses which led to the extinction of these cursorial rhinoceroses.
Those modifications most noticeable in the case of cursorial types may be briefly mentioned as examples.
It cannot be that it is learned by imitation, any more than the exercise of the cursorial powers can be said to be thus acquired.
So far as habits go we might be justified in calling them cursorial birds of prey.
No mammal has more than five toes, and the number tends to become reduced in cursorial animals (Rodents, Ungulates, Kangaroos).