The carriage of these handsome, well-built birds is upright; while their gait, when they are walking with measured steps, is calm and stately. These birds can, however, run with great speed, so fast indeed that a man can keep up with them only with difficulty. The flight is heavy and slow, with powerful, measured strokes of the wings, and the neck and legs stretched out. The crest, or crown, is at the same time depressed. When in flight, a party of cranes always arrange themselves in wedge-shaped form in order to cleave their passage through the air with the least possible resistance; a very powerful bird taking up the position at the apex of the triangle. As in all cranes, the cry is very loud and resounding; its piercing, trumpet-like notes being due to the complicated structure of the windpipe, which is arranged in coils, and consists of more than three hundred bony rings. [Illustration] The food of these cranes consists chiefly of various kinds of grain and other seeds, among which those of durrha or Kafir millet form the largest portion. The seed-spikes of grass, buds of trees, and fruits, as well as a certain proportion of insects, are, however, also devoured by these birds. Very curious are the attitudes assumed by these handsome birds, especially when they are surprised or under the influence of excitement. On such occasions they place themselves in wonderful postures, bending their bodies up and down, spreading out their wings, and then joining their fellows in a dance, during which they often spring a yard high in the air, while all the time their feet are alternately lifted and put down in regular rhythm. The daily life of the crowned crane displays great uniformity. At sunrise the whole flock flies out into the veldt, where its members search for food at least a couple of hours; then they proceed to the water to drink, and spend the day in digesting their morning’s meal. Their favourite resort for the day is a sandbank far out in a river, where they can stand and preen their feathers or doze without fear of interruption. At evening the flock returns to its sleeping-quarters in the forest. All the graceful habits of these cranes can be studied in Europe, where the birds flourish in confinement, if given sufficient room. In captivity they soon learn to associate with the human beings and animals with whom they are brought into contact, and are specially keen in discriminating between those who treat them well and those who dislike their companionship. These cranes are also to be met with in every Kafir village, while they are likewise frequently tamed by the European settlers in both South and East Africa. In Europe the group is represented by the ordinary grey crane (_Grus cinerea_) and the elegant demoiselle crane (_G. virgo_), both of which lack the crests of their crowned relatives.