Three species of this group inhabit the Himalayas, and a fourth, as noted below, may probably be observed in British territory hereafter.
The Koklass-Pheasants differ from nearly all the Pheasants in having no nude skin on the side of the head. The male bird has a crest of very remarkable form. The feathers are all narrow and soft, and whereas those of the central portion of the crest are only two inches in length, those at the sides are fully twice this length. The middle portion of the crest is also of a different colour to the lateral portions. The crest of the female is bushy and rather more than one inch in length. The plumage of the male is lanceolate throughout, but the plumage of the female possesses this character in a less marked degree.
The tail when expanded is wedge-shaped, and composed of 16 feathers, the outermost being half the length of the middle pair. The male has one large spur on each leg.
Some of the outer webs of the quills of the wing in both sexes of these Pheasants are coloured rufous, and this character being very constant, may be serviceable for the purpose of discriminating these birds.
A fourth species of this group(Pucrasia castanea) has been known for very many years. The original specimens, which Mr. Gould described and figured, are supposed to have been procured in Kafiristan, but the matter is doubtful. This Pheasant may possibly be found in Kashmir. It may be recognised by the colour of the upper part of the mantle and neck, which is dark chestnut like that of the lower plumage. The sides of the body are chestnut, or chestnut mixed with a little black.