Cogswell 1950 Phalaenoptilus nuttallii Aug. 22 w. facing slope Serena Cr. Canyon, 6700 ft., Placer Co. 3 mi. S Soda Springs (Nevada Co.), Calif. - at about 9:30 pm. (PDST) as Geo W Salt, Leo Treichel, and I stopped to listen for owls along the Soda Springs - Am. River Cr. road, we heard a distant note which when followed up, turned out & be a Boon-Will. It called several scores of times, in series of 10-100+ each. Most of the time it called from far down on a steep, chaparral (huckleberry oak, manzanita, ceanothus) slope with outcrops of lava rock. I tried to call it up by imitations; and it once alighted on a rock about 60 feet from me and called from there. We had it in flash-light beams several times. This occurrence undoubtedly is one of post-breeding up mountain movement, there being many extensive chaparral areas that the pine belt of the American River Canyon to afford it stepping stones. This is the highest altitude (in northern Calif) at which I have found the species.