Instructed by long experience and the observations of many years, I hope to show in my description that our common linnet (_Fringilla Linota_, Linnæus), the greater redpole (_Fringilla cannabina_, Linnæus), and, according to all appearance, the mountain linnet (_Fringilla montana_, Linnæus), are one and the same species. A male three years old or less, is distinguished in spring by the following colours, and by the name of redpole. The forehead is blood red, the rest of the head reddish ash-coloured, the top rather spotted with black; the cheek, sides of the neck, and the circle round the eyes, have a reddish white tint; the feathers of the back are chestnut with the edges lighter; the upper tail-coverts are black edged with reddish white; the throat and under part of the neck are yellowish white, with some dashes of reddish grey; the sides of the breast are blood red edged with reddish white, the sides of the belly are pale rust-coloured; the rest of the under part of the body is reddish white; the greater wing coverts are black, bordered with reddish white, the others are rusty brown with a lighter border. The quill-feathers are black tipped with white, the first are edged with white nearly to the point, the narrow beard forms a parallel white streak to the quill-feathers; the tail is black and forked, the four outer feathers on both sides have a broad white border, that of the two middle feathers is narrower, and reddish white. After moulting, in autumn, little red is seen on the forehead, because the feathers become coloured from the bottom to the top; the breast has not yet acquired its red tint, for the white border is still too wide; but when winter comes its colours appear. Males one year old have no red on the head, and more dashes of black; the breast is pale red waved with pale and dark, the under part of the feathers on the breast is only a bright reddish grey brown, the edges of these feathers are of a reddish white; the back rust-colour has some detached spots of dark brown and reddish white. These birds are known under the name of grey linnets. After the second moulting, if the reddish grey feathers are blown aside, blood red specks may be discovered on the forehead, and the red of the breast is only hidden by the wide yellowish white borders to the feathers; these are the yellow linnets, or the rock linnets, as they are called in Thuringia.