+Falco peregrinus anatum+ Bonaparte: Peregrine falcon.--A nest was found on June 27, 1952, on the south slope of Mount Umiat approximately 225 feet above the Colville River, 40 feet from the top of the cliff and 30 feet west of the top of the mountain. The nest, three feet in depth at the front, two feet in depth at the rear, and 2-1/2 feet wide was made of sticks of many years accumulation and was placed on a pinnacled platform 12 feet high. The nest contained one infertile egg and two others in which embryos were approximately one third developed. The female remained near us the one hour that we were in the area. She flew back and forth in front of the nest terminating each flight in an upswing arc and occasionally rested on top of the ridge to the west. She dove at us but never came closer than 10 feet before swerving upward. The male was not present. In a canyon 1/5 mile northeast of the nest two dead ptarmigan were at the edge of a willow cotton-grass swale. A nest of a peregrine falcon used three years before was 1-7/10 miles east and 1-7/10 miles north of Umiat. The nest was eight feet up on the face of a cliff 13 feet in height and easily accessible to either fox or wolf. Along the Colville River the falcon feeds on small shore-birds and other small birds. +Falco columbarius bendirei+ Swann: Pigeon hawk.--On a benchland between Chandler Lake and mountains to the west on August 12, 1952, a pigeon hawk hunted back and forth across a meadow, fearlessly inspecting us from distances of 20 to 30 feet as it searched the meadow for food. This falcon systematically searched those areas where longspurs were known by us to be most frequently found. Twice it flushed Lapland longspurs and darted at them but without success. Of the four pigeon hawks at Chandler Lake three were moving south and one was moving north down the canyon. We saw this species at Chandler Lake also on August 17, 20 and 21, 1951, and at Driftwood on August 27, 1952. Approximately 1/10 mile north of James Robert Lake (Aug. 8, 1952) a pigeon hawk was harassing five ravens that were feeding on a dead caribou. This falcon flew back and forth above the ravens. +Falco sparverius sparverius+ Linnaeus: Sparrow hawk.--One seen in the summer of 1952 at the mouth of the Colville River by Clifford Fiscus. +Lagopus lagopus alascensis+ Swarth: Willow ptarmigan.--Specimens, 5: Topagaruk, 155 deg.48', 70 deg.34', 10 ft., No. 50587, ad. female, July 8, 1951; Kaolak River, 159 deg.47'40", 70 deg.11'15", 30 ft., No. 30586, ad. female, July 14, 1951 and No. 30585, ad. male, July 15, 1951; Kaolak, 160 deg.14'51", 69 deg.56'00", 178 ft., No. 30583, ad. male and No. 30584, ad. female, July 23, 1951.