Christensen, D.M. 1963 Journal 12 June Hidden Forest, 7,900 ft., Sheep Range, Clark Co. Went out at 7, after all had left. 100 yds. N.E. of Colin I heard a robin sing - many qualities like a bl-headed thrasher. Flew as I approached - sat 6 ft. up in pine & got it. Worked up canyon. Relatively little bird activity. Got a 7 Audubon - had a creeper. Two mourning doves flushed from under fir trees, flew up & away in firs & pines - elevation about 8,200 ft. The lower canyon has far more birds than above the Colin. One or 2 w. tanagers up canyon singing - far more numerous down canyon in area of piñons - pines - rabbit brush where I saw 5 together. Fletcher brought in a ruffini also - Miller shot at one above camp before I left. Suddenly they show up - just like the creepers. This is a rugged country - the game trails are by far the best means of getting about. They contain the hills and lips, sin rocks, falls, etc. They are probably made by both big horn and deer - their skeletons are frequently encountered. Also, beds and fecal piles of all ages are frequent - tho no fresh ones. Varners claims both species are lower down the hill now. I have seen little browsing evidence except for the browse line on 43 of the smaller aspen trees. The line is about 4 ft. high - amazingly low! Miller saw fresh sheep tracks down canyon other day.