One young ram thought to escape by leaving the cliff and making his way across a steep, snowy slide to another crag. In places he struck soft snow and plunged heavily, breaking his way through. Midway between crags, however, he came to grief quite unexpectedly. An oozing spring had overflowed and covered the rocks with a coating of ice. Then snow had blown down from above and covered it. The ram struck this at top speed, and a moment afterward was turning somersaults down the slope. A hundred feet below he nimbly recovered his balance and proceeded on his way, carrying his head haughtily, as though indignant at my burst of laughter. Part way down the cliff I found the tracks of the big ram leader of the band. I had long since named him "Big Eye," which an old trapper had told me was the Indians' expression for extraordinary eyesight. Not that "Big Eye" was exceptional in this respect, not at all! Every one of his band possessed miraculous eyesight. But he was always alert and wary. It was unbelievable that he could detect me such a long way off, around bowlders, through granite walls, in thick brush, but it seemed to me he did. No matter how carefully I concealed my approach, he always discovered me. This day he had left his band and had turned aside upon an extremely narrow shelf and made his way out of sight. I followed his tracks, curious to learn where he had gone. Many places he had negotiated without slacking his speed, whereas I was forced to make detours for better footing, to double back and forth, and generally to progress very slowly. Apparently he was not much frightened, for his tracks showed that he had frequently halted to look behind him. So intent was I upon overtaking him, that I ran into a flock of ptarmigan and nearly stepped on one of the "fool hens" before it took wing and got out of the way, so utterly did it stake its safety on its winter camouflage. The whole flock had been sitting in plain sight but their snow-white coats made them hardly distinguishable from their background. They faded into the landscape like an elusive puzzle picture. In summer they had depended on their speckled plumage, so like the mottled patches of sand and snow and grass and granite whereon they lived, to protect them. They certainly put their trust in nature!