Stone's Sheep occur in relatively large numbers in many of the mountain ranges in the northern 1/3 of the province of B.C. They number approximately 14,500 animals. Their range also extends up into the Yukon Territory and number approximately 4000 animals. Over 1/2 of this number in the Yukon are what can be described as Fannin Sheep or an intergrade between Stone's and the pure white Dall Sheep of the Northern Yukon.

Stone's Sheep are named after the hunter - explorer Andrew Stone who brought back the first specimen to the United States from BC in 1896. This specimen was collected in the Stikine River area of the Cassiars. What this means is that the proper name is Stone's Sheep.

As anyone who has seen a herd of Stone's, the colour variation between each member of the herd can be quite striking. As well, there is a pronounced colour variation between different areas of the range. In the Southern and the Western areas of their range the sheep tend to be quite a bit darker. Both males and females have a large white rump patch that extends down each hind leg. As well, the head is most times a lighter colour than the body. Shades of gray, black and white can make this species quite difficult to find in the wild and it is often the white rump patch that gives them away while they are up and feeding.