The females, light greyish-brown in colour, are hardly a third the size of the males; and their horns are round and tapering, from ten inches to a foot in length.
Their appearance upon the whole is clean-made, agile, and graceful.
"`In the summer they everywhere resort to the highest accessible places where food can be found--often to a part of the country several marches distant from their winter haunts.

This migration commences as soon as the snow begins to disappear; and is very gradually performed--the animals receding from hill to hill, and remaining a few days upon each.
"`At this season the males keep in large flocks, apart from the females; and as many as a hundred may occasionally be seen together.

During the heat of the day they rarely move about, but rest and sleep--either on the beds of snow in the ravines, or on the rocks and shingly slopes of the barren hill-sides, above the limits of vegetation.

Sometimes, but very rarely, they will lie down on the grassy spots where they have been feeding.

Towards evening they begin to move, and proceed to their grazing-grounds--which are often miles away.