Pfeek 1943 Sayornis nigricans June 16 zone E Hayfork, 2400 ft., Trinity Co., Calif. 2 pairs established along the north side of Hayfork Creek over a distance of about 400 ft. south of camp. An Ash-throat established in a stand of scattered pines and oaks about placer digging to the north of one of the pairs of Black Phoebe, was observed to chase a Black Phoebe as it ventured (or wandered) into the home area of the Ash-throat. Following the chase, the Black Phoebe remained apparently within its own area, calling inter-mittently. June 24 / mi W Hyampom, 1200 ft., Trinity Co., Calif. One observed foraging about willow thickets in the vicinity of ponds in cobble washes south of camp.