_Cuckoo_, or _Gowk_.—(_Cuculus Canorus_, LINN.; _Le Coucou_, BUFF.)—Length fourteen inches, breadth twenty-five; its bill is black and somewhat bent; eyes yellow; inside of the mouth red; its head, neck, back, and wing coverts are of a pale blue, or dove colour, which is darkest on the head and back, and palest on the fore part of the neck and rump; its breast and belly are white, elegantly crossed with wavy bars of black; the quill feathers are dusky, their inner webs marked with large oval white spots; the tail is long; the two middle feathers are black, with white tips; the others dusky, marked with alternate spots of white on each side the shaft: the legs are short and of a yellow colour; toes two forward, and two backward; claws white. The cuckoo visits us early in the spring; its well-known cry is generally heard about the middle of April, and ceases the latter end of June; its stay is short, the old cuckoos being said to quit this country early in July. Cuckoos build no nest; and, what is more extraordinary, the female deposits her solitary egg in the nest of another bird, by which it is hatched. The nest she chooses for this purpose is generally selected from the following, viz., the hedge sparrows, water wagtails, titlarks, yellow hammers, green linnets, or the winchats. Of these it has been observed that she shows a much greater partiality to that of the hedge sparrow than to any of the rest.—_Bewick._ CUP, _v._ To draw blood by applying cupping glasses. CUR, _s._ A worthless degenerate dog. CURB, _s._ An iron chain, made fast to the upper part of the branches of the bridle, running over the beard of the horse; restraint. Curb is an enlargement at the back of the hock, about three or four inches below the point of the hock. It is either a strain in the ring-like ligament which binds the tendons down in their place, or in the sheath of the tendons; oftener, we are inclined to think, of the ligament than of the sheath. Any sudden action of the limb of more than usual violence may produce it, and therefore horses are found to ‘throw out curbs’ after a hardly contested race, an extraordinary leap, a severe gallop over heavy ground, or a sudden check in the gallop. Young horses are particularly liable to it, and horses that are _cow-hocked_ or whose hocks and legs resemble those of the cow, the hocks being turned inward, and the legs forming a considerable angle outwards. This is intelligible enough; for in hocks so formed, the annular ligament must be continually on the stretch to confine the tendon. Curbs are generally accompanied by considerable lameness at their first appearance, but the swelling is not always great; indeed, it sometimes presents so gradual a curve, that it is scarcely perceivable when we stand behind the horse, and both the horseman and the veterinary surgeon have overlooked it. It is best detected by observing the leg sideway.