The Siskin is particularly numerous in mountain regions, chiefly inhabiting the interior of Norway, Sweden, and Russia. It is unknown in Northern Asia, but is occasionally met with in the north-eastern portions of that continent; Radde mentions flocks of these birds seen by him in the Bareja Mountains, and near the banks of the Amur. The Siskins are birds of passage, and, except in the breeding season, spend their time in wandering over the country, going south for the winter in great numbers, should the season be unusually cold or food deficient. In the summer months they frequent the pine forests of mountainous districts, living upon the seeds that are found there in abundance. In these places they also breed. During their migratory excursions they often appear in winter by thousands close to the villages, in districts where, in less inclement seasons, not one is to be seen. In these wanderings, barren tracts of country are carefully avoided, and they prefer perching upon the topmost branches of forest trees. "The Siskin," says Naumann "is always lively, adroit, and bold, and very attentive to the care of its plumage; it is brisk in its movements, and a most capital climber." In this respect it much resembles the Titmouse, frequently hanging backwards from the boughs, which it ascends quickly, even should they be quite perpendicular--in short, among the branches it is never quiet, except when asleep or while taking its food. It can also hop nimbly upon the ground, always, however, appearing to avoid descending from its perch, if not obliged to do so. Its flight is undulating, rapid, and light; it can pass with ease over large tracts of country, and rise to a considerable height in the air. Its song is a very simple, but not unpleasing, twitter. In all other respects this species strongly resembles the Birch-tree Siskin; in disposition it is social, peaceful, and thoughtless--indeed, we do not know any bird that shows so little regret at the loss of its freedom, or is more suitable for domestication. Moreover, it is very docile, and learns many little tricks, is not at all dainty concerning the quality of its food, and becomes so tame that it may be allowed to leave its cage at pleasure, and will obey its master's call. Hoffmann relates of several of these birds that were kept in his aviary, that they could be allowed to fly about, and would readily take their food from his hand. On one occasion, as he tells us, a flock of wild Siskins passed over the garden while one of his captive birds sat perched upon his hand. The tame bird had no sooner heard the call-notes of its brethren than it responded to the invitation, and flew at once to join the party upon a neighbouring tree, receiving a very warm reception from the little strangers, both individually and collectively. Of course he gave his pet Siskin up as lost, but made an effort to allure it back by its call-note and some favourite food. These efforts were successful,