4. The _Mongrel Bullfinch_. It is the offspring of a female reared in the house from the nest, and of a male canary. Its shape and colour partake of those of the parent birds; its note is very agreeable, and softer than that of the canary; but it is very scarce. This union rarely succeeds; but when tried, a very ardent and spirited canary should be chosen[31]. 5. The other varieties are: the _Large Bullfinch_, about the size of a thrush, and the _Middling_, or _Common_. As to dwarf birds, which are not as large as a chaffinch, it is a bird-catcher's story, for this difference in size is observed in all kinds of birds. I can affirm it with the more certainty, having had opportunities every year of seeing hundreds of these birds, both wild and tame. I have even in the same nest found some as small as red-breasts, and others as large as a crossbill. HABITATION.--When wild, bullfinches are found over Europe and Russia. They are particularly common in the mountainous forests of Germany. The male and female never separate during the whole year. In winter they wander about everywhere in search of buds. In the house those which are caught in a snare are often let run about. These birds not being very unruly or very active, a middling-sized cage will do, in which those which have learned songs are kept; but they must be kept in separate rooms, as they will mutually spoil their songs if left together. FOOD.--When wild the bullfinch does not often suffer from the failure of its food; for it eats pine and fir seeds, the fruit of the ash and maple, corn, all kinds of berries, the buds of the oak, beech, and pear trees, and even linseed, millet, rape, and nettle seed. In the house those which run about may be fed on the universal paste, and, for a change, rape seed may be added; those which are taught must be fed only on poppy seed, with a little hemp seed, and now and then a little biscuit without spice. It has been remarked that those which are fed entirely on rape seed soaked in water live much longer, and are more healthy. The hemp seed is too heating, sooner or later blinds them, and always brings on a decline. A little green food, such as lettuce, endive, chickweed, water-cresses, a little apple, particularly the kernels, the berries of the service tree, and the like, is agreeable and salutary to them.