Cogswell 1949 Strix occidentalis Sep. 8 (2½ mi. NNW) Red Mtn. 5300 ft., 14 mi. S Kayford, Trinity Co. Calif. at about 9:50 p.m. Two individuals of this species began calling from the trees near our camp (border of open pine forest & a small path of white fir). They gave a typical spotted owl bark, but without any fancy garbled endings: “who’ you - wu - woo - woo - woo -” No distinct difference in pitch could be was noticed between them. They (or at least 1 of them) also gave repeatedly a pure whistle starting on a low pitch rising gradually until at its end when a sharp rise finished it abruptly, thus: whooooooooooooo Neither bird seemed to pay any attention to my imitations of either of their calls. The whistling became more frequent & barbing less frequent as they moved on up the mountain toward Dubahella Peak. They had called for a 10-15 min. period near camp, but we did not get to see them, having expected them to come closer to our calls.