Cogswell 1950 Troglodytes aedon 2 July 25 near Sugar Bowl Lodge, 7000 ft. [see p.] - 1 in willow thickets at edge of wet "Cowgill meadow" was giving a subdued and hesitating song. Another called nearly. July 29- I heard calling in same willow & brush area. aug. 30? July 31- another "half song" heard. (bird seen) aug.5 Lisco Groove, 5650 ft., on S. Fork Yuba River, Glacer Co., Calif. - 1 seen in dead brush, creek dogwood, & willow thicket along stream aug.11 NE. of Mary Lake [see p.] - 2 seen in min. alder thicket - Big Bend Camp Trd., 5800 ft., on S Fork Yuba R., Glacer Co., Calif. - 1 in dense, moist thickets on S slope near stream in opening of tall, dark forest. aug.14 near Sugar Bowl Lodge, 7000 ft. [see p.] - 1 in usual place "" 16 Aug.22 Onion Cr. Canyon, 6050 ft., 2 mi. W, 3 mi. S Donner Pass, Glacer Co., Calif. - 1 in dead brush & root tangle under sparse trees along gullied stream bed. {aug.21 Grosser Cr., 5650 ft., 1 1/3 mi. E, 3 1/2 mi. N Truckee, Nevada Co. Calif.- 1 seen in browsed back (a therefore dense) willowos scattered along gravelly stream in (mow) dry grassy swale below sagebrush-covered hills. Aug.24 "Signal Hill", 7200 ft., 1 mi. W Donner Pass, Glacer- Nevada Co.line, Calif. - 2 seen in edge of bitter cherry, willow, etc. brush on moist S facing slope. aug.25 near Mary Lake [see p.] - 1 in willows near lake & forest edge. General: I am satisfied that the House wren does not nest regularly at localities of Donner Pass altitude. All the above records except that of June 24, are probably of wandering birds.