As they went on, Mr. Sturgis and Hugh began to speak of matters on the ranch, of cows and calves and horses and colts and brands, and of places and people Jack had never heard of, so that he paid no heed to their talk, but occupied himself in watching the prairie over which they were driving, and the wild creatures which lived on it. There were many of these, chiefly birds, and these of kinds new to him, familiar only with the commoner birds of the sea-coast. Most of them were small and dull-coloured, but not all; for, flying up from the road, yet often standing close to it while the waggon passed, were little birds with bright yellow throats and black chins, and which seemed to have little black horns on either side of the head. There were great flocks of these, and Jack determined to remember and ask his uncle what they were. At one time a great, long-eared animal sprang from under a bush by the side of the road and half hopped, half ran off over the prairie. It was mostly white, and had long ears, and Jack thought it must be a rabbit of some kind. When it sprang into view, the horses gave a great bound and tried to run, and not until they had again been brought down to a trot was he able to ask what it was, and to learn that it was a jack-rabbit. By this time they had gone quite a long way, and as they reached the top of a ridge, Mr. Sturgis pointed toward a range of distant hills which cut off the view, and asked his nephew how far off he thought they were. "Oh, I don't know, Uncle Will; how far are they?" "They are about twenty miles distant, and we have to go ten miles beyond them. Do you see that low place in the line of the horizon, just to the right of the horses' heads? Well, we go through that. There is a narrow valley there, and we go up that, and then over the hill and down into the basin, where the ranch is." "What makes those mountains look so grey, Uncle Will? They shine almost like silver. In some places the mountain looks black, but it's mostly grey."