9. about one mile northwest of camp at 8000' a Mountain Bluebird had a nest in a large dead Pinyon snag. The nest was inside an old woodpecker hole (about the size of a Red-shafted Flicker's). I could not get my hand through the opening. Both parents were nearby, chattering nervously. Near this area were a few Black-throated Gray Warblers, and a single was collected. Many outcroppings and cliffs are found about 7500' to 8000' feet here. The material looks like limestone for there are many pockets eroded in it. One narrow canyon bordered by cliffs and grown to large Pinyon was inhabited by a Horned Owl. He flew noisily off as I approached. A flock of about ten Bushtits was foraging excitedly through the Pinyon and Juniper near the cliffs. I heard at least one Western Tanager singing amidst the thick Pinyon. A single Gray Flycatcher was collected among the Juniper on a hillside. It showed a definite brood patch, thus must have been incubating even though it was a 31. In a dense grove of small Pinyon trees two long-eared Owls were flushed. I saw one of them again about a hundred yards south of where I had first seen them. A group of Plain Titmouse was present in the moderately dense