BREEDING.--The nest of the chaffinch is one of the most beautiful of birds' nests, and formed in the most skilful manner. It is the shape of a half globe flattened on the upper part, and so perfectly rounded that it has the appearance of having been turned on a lathe. Cobwebs[36] and wool fasten it to the branch, bits of moss with small twigs entwined form the ground-work; the lining is composed of feathers, thistle-down, the hair of horses and other animals, whilst the outer covering is formed of the different lichens that grow on the tree in which it is placed, the whole firmly united and well cemented. This outer finish is no doubt intended to deceive an enemy's eye; in fact, it is very difficult, even with great attention, to distinguish the nest from the bark of the branch on which it is fixed. The female has two broods in the year; she lays from three to five eggs, of a pale bluish grey, spotted and streaked with brown: the first brood (and this is confirmed in general by observations of other birds) rarely produces any but males, the second only females. Bird-fanciers can distinguish the one from the other before they leave the nest; the breast of the male already discovering a reddish tint, the circle round the eyes being yellower, the wings blacker, and the lines that cross them whiter, though in other respects it resembles its mother. If you wish to be quite sure, pluck some feathers from the breast of the bird you have taken from the nest, in a fortnight they will be replaced, and the presence or absence of red will infallibly decide whether it is male or female. As soon as the tail-feathers begin to appear they must be taken from the nest, to prevent the possibility of their ear being injured by hearing an imperfect song, for scarcely are the wings and tail half grown than these birds begin to warble, and to imitate the song of those around them. They must be fed on rape seed soaked in water and the crumb of white bread; it is very easy to rear them and preserve them healthy till the time of moulting, but then numbers perish, particularly if not quickly relieved by being given meal-worms and ants' eggs, or any other animal food, as bread boiled in or soaked in boiled milk.