20 January 1952 Journal 46. Aug 6 6 mi E Truchas, 10,000 ft, Rio Arriba, New Mexico The field above, with its myriads of open tops is full of chipmunks and the problem is going to be how to keep the chipmunks out of the traps so the Microtus can get in. I got one bat tonight. A Myotis I think. They were quite plentiful that evening but flying very fast. A little breeze has sprung up, and it feels quite Fallish. Aug 7 Checked traps. 2 Peromyscus and 2 Microtus longicaudus. I checked the traps at intervals throughout the day. The total bag was, in addition to the above, 5 M. longicaudus and 2 Eutamias. I was surprised at so few chipmunks. Several pairs of mountain climbers appeared today, all heading in the direction of Truchas Peak. Bon Voyage! I went up on the high ridges to the south west of here, after first shooting along the creek for marmots, I got spiculated. The ridge was steep and 3-400 feet high. The dominant trees on its top is White Pine and into the disappearance of the papery-coned Doug fir or Engleman Spruce. The chickaree also checks out. There are a few yellow pines in among the white pine, a situation which I think is unusual. What Zone do you call that, Mr. Merriam? I shot 2 (Russet-Backed?), Thrushes up here. Two young birds, I suspect that these are Hermit Thrushes. Even if they are big and have-