2. The black lark. The whole body of this variety is black with a rusty tinge, and the belly feathers are edged with white. I am ignorant whether this variety has ever been found wild; but it is not uncommon in dwelling houses, especially when the cages are fixed in a dark place where the rays of the sun cannot penetrate; in moulting, their colour passes away to give place to the primitive plumage, which never happens to the white variety.
Habitation.—In a wild state, the sky-lark is found almost all over the world, frequenting fields and meadows, and by preference plains. It is a bird of passage which generally arrives in our regions in the beginning of February, and departs in great flights in the month of October[60]. No bird of passage returns so soon as the lark; but as it lives not only on insects, but eats all kinds of seeds and even grass, it can seldom be in want of provision even in the severest weather.
In rooms, it is common to let it hop about, giving it a retired corner to sleep; it is, however, also kept in cages, where it sings best. Whatever form may be given to these cages, they must be at least eighteen inches long, nine wide, and fifteen high; the bottom should have a drawer in which enough of river sand should be kept for this scratching bird to be able to roll and dust itself conveniently. It is also a good plan to have in a corner a little square of fresh turf, which is as beneficial as it is agreeable. The top of the cage must be of linen, since, from its tendency to rise for flight, it would run the risk of wounding its head against a covering of wood or iron wire, especially before it is well tamed. The vessels for food and drink must be outside, or, which I prefer, a drawer for the food may be introduced in the side of the cage: sticks are not necessary, as the lark does not perch. When it is allowed to hop free in a room, the latter must be very clean and neat, otherwise a thread or hair may entangle the feet, and if not removed it easily cuts the skin, maims the bird, and the entangled toes shrink and fall off.
Food.—When wild, the food consists of insects, especially ants’ eggs; also of all kinds of seeds, and in autumn of oats, which these birds skin by striking them against the ground, their beak being too weak to shell them alone. In the spring the sprouting seeds and young buds, also the blades of young grass, are eaten, and grains of sand help their digestion.
In the house, if the lark is hopping about, nothing is better than the first universal paste described in the Introduction; but if caged the second will suit it better. Poppy-seed, bruised hemp, crumb of bread, and plenty of greens, as lettuce, endive, cabbage, or water-cress, according to the season, must be added. A little lean meat and ants’ eggs are favourite delicacies, which make it gay and more inclined to sing. When old larks are first made prisoners, they must be fed only with oats and poppy-seed to reconcile them to captivity.
Breeding.—The lark lays but once a year in cold countries, twice in the temperate, and three times in the warmer climates. Its nest, formed on the ground in a little hollow, is made without much art of straw, and the wool and hair of animals, and by preference in hollow ground or among the summer crops of grain. The eggs, in number from three to five, are of a whitish gray, spotted and dotted with dark gray; incubation lasts fourteen days. By the end of April the young are often hatched, and are at first only fed with insects, and leave the nest before they can fly; but they nevertheless continue to be fed by the mother till they can follow her in her excursions. Before the first moulting all the upper part of the body is dotted with white; if it is wished to take nestlings, they must be removed from the nest when the tail is about three quarters of an inch long. They are fed with crumb of white bread, and poppy-seed steeped in milk; some ants’ eggs or a little minced lean meat will be a wholesome addition. The males are soon distinguished by their yellow colour. If it is intended to teach them to perform a tune, their instructor must commence before they are ready to fly, for by that time they already begin to record their natural song. They must also be completely separated from other singing birds, otherwise the great flexibility of their organs, joined to their memory, will infallibly cause them to adopt the song of such birds as they are near; and even old larks, brought into my bird-room, have learnt to imitate perfectly the nightingale and chaffinch. They vary, however, very much in this respect. Some females in confinement lay without the presence of a male, and others pair, but I have never yet succeeded in making them sit. One of my neighbours, notwithstanding the greatest care, has succeeded no better, though he had a female which laid from twenty to twenty-five eggs annually. There would undoubtedly be a better chance of success in a large garden aviary[61].
Diseases.—Besides those which have been named in the Introduction, these birds are very subject to a kind of scurf or yellow crust round the base of the beak. The best remedy is to take care that they have good food; the second universal paste agrees with them particularly well; but greens, ants’ eggs, meal-worms, or other insects, must be added. With this food they may be preserved healthy for many years in the house. Instances have been known of larks which have lived in this way for thirty years.