bullfinch; these are placed at small distances from the nets, in little cages. He has besides what are called slur-birds, which are placed within the nets, are raised upon the slur, and gently let down at the time the wild bird approaches them. The slur is a moveable perch to which the bird is tied, and which the bird-catcher can raise at pleasure by means of a long string fastened to it. The slur-birds generally consist of the linnet, goldfinch, and greenfinch, which are secured to the slur by what is called a brace, which secures the bird without injuring the plumage. It is a sort of bandage, formed of a slender silken string, fastened round the body, and under the wings, so as to hinder the bird from being hurt, let it flutter ever so much. As it has been found that there is a superiority in birds that are in song, the bird-catchers contrive that their call-birds should moult before the usual time. They therefore, in June or July, put them into a box, quite close under two or three folds of blankets, and leave their dung in the cage to raise a greater heat, in which state they continue, being perhaps examined but once a week to have fresh water. As for food, the air is so putrid, that they eat little during the whole state of confinement; which lasts about a month. The birds frequently die under the operation, and hence the value of a stopped bird, as the bird-catchers style it, rises greatly. When the bird has thus prematurely moulted, he is in song whilst the wild birds are out of song, and his note is louder and more piercing than that of a wild one; but it is not only in his note he receives an alteration, the plumage is also improved. The black and yellow in the wings of the goldfinch, for example, become deeper and more vivid, and acquire a beautiful gloss, which is not to be seen in the wild bird. The bill, which, in the latter, is black at the end, in the stopped bird becomes white and more taper, as do its legs; in short, there is as much difference between a wild and a stopped bird, as there is between a horse kept in body-clothes, and one at grass. When the bird-catcher has laid his nets, he disposes his call-birds at proper intervals. There is a most malicious joy in these call-birds, to bring the wild ones into the same captivity, which may likewise be observed with regard to decoy ducks. (_See_ DECOY.) Their sight and hearing infinitely excel those of the bird-catcher. The moment they see a hawk they communicate the alarm to each other by a plaintive note, nor will they then jerk or call though the wild birds are near. But at any other time, the instant that the wild birds are perceived, notice is given by one to the rest of the call-birds, as by the first hound that hits on the scent, to the rest of the pack, after which follows the same sort of tumultuous joy. The call-birds, while the bird is at a distance, do not sing as a bird does in a chamber; they invite the wild ones by what the bird-catchers call