The sheep of the Rocky Mountains and of the bad lands (_O. canadensis_ and _O. canadensis auduboni_) are those with which we are most familiar. Both forms are called the Rocky Mountain sheep, and from this it is commonly inferred that they are confined to the mountains, and live solely among the rocks. In a measure this belief is true today, but it was not invariably so in old times. As in Asia, so in America, the wild sheep is an inhabitant of the high grass land plateaus. It delights in the elevated prairies, but near these prairies it must have rough or broken country to which it may retreat when pursued by its enemies. Before the days of the railroad and the settlements in the West, the sheep was often found on the prairie. It was then abundant in many localities where to-day farmers have their wheat fields, and to some extent shared the feeding ground of the antelope and the buffalo. Many and many a time while riding over the prairie, I have seen among the antelope that loped carelessly out of the way of the wagon before which I was riding, a few sheep, which would finally separate themselves from the antelope and run up to rising ground, there to stand and call until we had come too near them, when they would lope off and finally be seen climbing some steep butte or bluff, and there pausing for a last look, would disappear. Those were the days when if a man had a deer, a sheep, an antelope, or the bosse ribs of a buffalo cow on his pack or in his wagon, it did not occur to him to shoot at the game among which he rode. I have seen sheep feeding on the prairies with antelope, and in little groups by themselves in North Dakota, Montana, and Wyoming, and men whose experience extends much further back than mine--men, too, whose life was largely devoted to observing the wild animals among which they lived--unite in telling me that they were commonly found in such situations. Personally I never saw sheep among buffalo, but knowing as I do the situations that both inhabited and the ways of life of each, I am confident that sheep were often found with the buffalo, just as were antelope. The country of northwestern Montana, where high prairie is broken now and then by steep buttes rising to a height of several hundred feet, and by little ranges of volcanic uplifts like the Sweet Grass Hills, the Bear Paw Mountains, the Little Rockies, the Judith, and many others, was a favorite locality for sheep, and so, no doubt, was the butte country of western North Dakota, South Dakota and Nebraska, this being roughly the eastern limit of the species. In general it may be said that the plains sheep preferred plateaus much like those inhabited by the mule deer, a prairie country where there were rough broken hills or buttes, to which they could retreat when disturbed. That this habit was taken advantage of to destroy them will be shown further on.