144 THE CONDOR VOL. X

in a fairly thick grove of box elders. A search thru several hollow trees in the vicinity soon revealed the nest. It was situated in a hollow limb of a live box NESTLING OF ROCKV MOUNTAIN SCRIiECH OWL: IN A 'IND a fledgling vith the old bird a few days later, I am pretty sure that this was the nest. The third nest I was able to sit several times and my notes, accord- ingly, are more complete. This nest, apparently an old flicker's hole, was in a small cottonwood stump,jb0ut fifteen feet up; the stump beine[ff rotten, and leaning directly ovY a mountain stream, it was not a very. safe place for a family of young birdi, I found this nest on June 4, 1.9(7 by rapping on the stump; the owl yes- ponded by peeking out of the hle and promptly dropping back agr. As I suspected young birds d be in the nest, I returned on June 19, with my camera. I enlarged the opening a little and put my hand in. The lady of the house was in possession; elder, about twenty-five feet from the ground, and contained one young bird almost ready to leave the nest. The cavity, which was in the end of the limb, vas about five inches across at the top and about two feet deep; it sloped at an angle of about thirty degrees, for a short distance, then went off in a horizontal direction; it was back here that I found the bird. While I vas at the nest, the old bird, pre- sumably the female, lit a few feet from ne, but did not show much anxiety, except to snap her bill occasionally. The second nest was found on May 28, 1907. I flushed the adult from the hollow, but, on account of the size of the tree, I could not get into it. The cavity was in the center of a huge cotton-wood stump about three feet in diameter, and fifteen feet high; it was over a foot wide at the top and nearly ten .feet deep, so it was almost impossible to get into it. Hovever, as I saw VOUNG ROCKV MOUNTAIN SCREECH O'L