Cranes frequent large plains intersected with marshes and water-courses. They feed on fish, reptiles, frogs, mollusks, worms, insects, and even small mammals. Some kinds of grain have also attractions for them, and they may not unfrequently be seen invading the newly-sown fields to devour the seed which the farmer has just committed to the soil.
When the breeding season arrives, they break up their social compact, and pair off for the purposes of reproduction and attending to the rearing of their young.
Their nests are but roughly constructed, and are placed on any little piece of rising ground in the midst of the marshes; in them they lay usually two eggs, the male sharing with the female the cares of incubation. Although these birds are ordinarily so timid, and are alarmed at the least appearance of danger, yet, when they have their young ones to defend, they become really courageous. In this case they do not shrink from attacking man.
The Crane ought to have been the emblem of vigilance. When the flock go to sleep, with their heads hidden under their wings, one of their number is specially charged with the duty of watching over their common safety, and of giving alarm on the approach of danger.
When caught young they are easily tamed, and in a very short time will manifest considerable familiarity with their keeper. They are, therefore, a good deal sought after in some countries, both on account of their graceful shape, and also for the sake of the vigilance which they exercise round about their home.
These birds were well known in ancient times; Homer, Herodotus, Aristotle, Plutarch, Ælian, Pliny, and Strabo have noticed them and their migrations. Unfortunately, not content with correct observations, they have given credence to some most ridiculous fables, invented in Greece and Egypt, the classic and fertile lands of the marvellous. Thus, according to the Egyptian story, the Cranes made an expedition to the sources of the Nile to fight against the Pygmies, who were, as Aristotle says, "a race of little men, mounted on little horses, who dwelt in caves." According to Pliny, these little men were armed with arrows, and mounted on rams; they abode in the mountains of India, and came down every spring to wage war against the Cranes, whose sole object was to exterminate the Pygmies. The Roman naturalist fancies that they succeeded in this destructive aim, for the town of Gerania, which even in his time was ruined and deserted, was formerly, he asserts, inhabited by a race of Pygmies, who were driven out by the Cranes. In the views of modern commentators, these Pygmies were nothing but monkeys, which assemble in large troops in the forests of Africa and India, and always manifest hostility to birds.
The Greeks have also invented two stories about Cranes, which are certainly very ingenious, but result from the error of attributing too much importance to trifles. They say Cranes carry a pebble in their mouths when they cross Mount Taurus, so that they are compelled to keep mute; they thus avoid exciting the attention of the Eagles inhabiting those districts, which birds are much disposed to do them mischief. In the same way, the Crane which is placed as sentinel to watch over his sleeping companions is bound to stand on one leg, and carry a stone in the other claw, so that if he allows himself to be overtaken by slumber, the fall of the pebble would wake him up. It was, as we are aware, the expedient of the youthful Aristotle to hold an iron ball suspended over a metal basin in order to wake himself if he succumbed to sleep. We shall, I think, ascribe too much ingenuity to the Crane in imputing to it an action of Aristotle's.
The members of this interesting feathered tribe were said to possess certain virtues. The thigh bone of a Crane imparted to him who possessed it remarkable vigour and elasticity of limb. Its brain also was a kind of love-philtre; it transformed the ugliest man into a perfect Adonis, and won for him the favour of the fair.
It is, moreover, to the Crane that the Greeks are indebted for one of their favourite dances. Be it understood that we are now returning to plain matter of fact. The games and dances which Cranes indulge in amongst themselves are not mere idle stories; observers of our own day, well worthy of credit, have proved their complete authenticity. It is certainly true that these birds form groups in various fashions, advance one towards another, make a kind of salutation, adopt the strangest postures—in a word, indulge in pantomimes both burlesque and amusing. This is, we must confess, a curious element in their character, and has been made the most of by the Chinese, who are in the habit of teaching Cranes to dance according to all the rules of art.
The ancients set a high value on the flesh of the Crane, which is, nevertheless, anything but good. The Greeks especially showed a great fondness for it; they used to fatten these birds after having put out their eyes or sewed up their eyelids; this cruelty being necessary, according to their idea, to cause a proper degree of plumpness.