M. Wilhelm von Wright speaks of the Hazel Hen as an exceedingly amusing bird in an aviary. At first it will not eat, but endeavours to hide itself in a corner; the best way is therefore to supply it with food and water and leave it to itself. Red whortle-berries and juniper-berries are the best for it at first, but afterwards it will eat hempseed, barley, buckwheat, and other grain. To induce it to drink, some berries should be put into the vessel containing water; it will also eat meat, raw or boiled. Dry sand should be placed in a box, as it "dusts" itself daily, if provided with this, especially should the sun shine, it makes a hole with its beak in the sand, which it throws over its body. Afterwards it lies first on one side and then on the other, or on its back, with eyes half closed, and often mounts on some part of the coop and whistles. THE PRAIRIE HEN, OR PINNATED GROUSE. The PRAIRIE HEN, or PINNATED GROUSE (_Tetrao cupido_, or _Cupidonia Americana_), a North American species very nearly related to the above birds, represents a group recognisable by two long tufts, each composed of about eighteen slender feathers, that hang down on each side of the neck and cover bare patches of skin which indicate the position of bladder-like cavities connected with the windpipe and capable of being inflated. The sexes are similarly coloured, but are readily distinguished by the inferior size of the tufts on the head of the female. The feathers on the mantle are black, striped with pale red and white, while those on the under side are striped light brown and white. The quills are greyish brown, with black shafts, and spotted with red on the outer web; the tail-feathers dark greyish brown, tipped with dirty white; the regions of the cheeks and throat are yellowish; the belly is of a whitish shade, and a line under the eye brown; the long throat-feathers that form the tufts are dark brown on the outer and pale yellowish red on the inner web. The eye is reddish brown, the brow bright scarlet, beak dark horn-grey, and bare parts of the foot and throat orange-yellow. This species is eighteen inches long, and its breadth thirty inches; the wing measures five inches and five-sixths, and the tail four inches and a half.