Wry-necks owe their name to the curious property they possess of being able to twist their necks in such a manner as to turn the head in all directions. They repeat this movement every instant, especially when surprised or angry. At the same time their eyes become fixed, the feathers of the head stand up, and the tail expands. Like Woodpeckers, they can hang upon trees, and sustain themselves in a vertical position for a long time; but they are incapable of climbing. The weakness of their beaks does not permit of their boring trees; therefore they seek their nourishment upon the ground, principally among the ant-hills. They build in natural holes in trees, or in those hollowed by Woodpeckers. Their plumage is attractive and their size is about that of the Lark. They inhabit all the old continent. THE JACAMARS. Jacamars inhabit equatorial America. They are characterized by long and pointed beaks, and short wings. They have three or four toes, according to the species. Their habits are little known; but it is certain that they live isolated or in pairs, that they are stupid, move but little, and rarely depart from the neighborhood where they have chosen their dwelling. All species do not frequent similar localities—as some like thick woods, others prefer open plains; all, however, are insect eaters. In their manners, as well as in their physical characteristics, Jacamars appear to resemble Kingfishers, of which we shall speak hereafter. The Paradise Jacamar is a good representative of the family. THE GALLINACEAE, OR DOMESTIC BIRDS. The family of Birds to which our domestic fowls belong is a very large one. It is known as the family of Gallinaceous Birds. The word is derived from the Latin gallina, a hen, and gallus, a cock. The many different Birds and Fowls found under this family are usually divided into six groups, and these may be readily classified without their long Latin names to designate them. In the first we find the different kinds of Grouse, the Cock of the Plains, the Heathcock, the Hazel Hen and others of the same nature, that resemble our Hens and Roosters, and care for their chickens in the same manner. Under the second group we find the Quail, the Colin, the Partridge, etc., that are well known in this country and in Europe. The Birds under the third group belong to South America, and are representatives of the Partridge on that continent. The birds belonging to the fourth group are the Chionides of Australia and New Zealand. In size they are between our Partridge and Pigeon. They live near the sea-beach, and feed on the sea-weed and dead Fishes that are thrown up by the waves.