Reaction of A and T to hawk. were at their customary early morning observation post: The perch which is fastened to the inside of the entrance door. (Door 1). Instead of lowering their heads at my approach and whining as is their usual habit at this time of day, they were frozen and looking off into space unwinkingly. I searched the sky, but saw nothing. A glance at the old oak--at which the birds did not seem to be look- ing--revealed a Cooper hawk on the topmost snag. He accommodatingly waited until I could get a gun from the house and kill him. I showed him to Archie and Terry, who were still frozen in the same spot. They thawed enough to turn their heads and follow the dead hawk as he was moved about, but exhibited no special fear. The mag- pies, however, who will yell at a feather, scolded harshly. Brownie Humming-bird. 6:30 P.M. The hummer is on the same night roost. (Clear, calm cool). Temperatures. It is a fact that record low temperatures for this time of the year are being recorded all over California. E.g.: Sacramento, the lowest in 80 years, 30. Riverside in the citrus district of south- ern California, 32. Oakland Airport (in sight from here), 30. Here, 39. (This illustrates the effect of elevation). Max. here during the day, 62; min., 39; now, 6:40 P.M., 52). November 6th. A shifts roost. 9:45 P.M. (Temp. 54; Max. during day 64; min., thermom. not set). Archie has changed his roost to a new place provided for him in the cage extension. This "bed" was placed after noticing his preference for the location last night. He was on a perch in a corner in a most uncomfortable position settled for the night. A bunk was hastily made for him; he was raised and the affair slipped under him without causing him to leave. He is in it tonight. T changes also. Terry changed to the hanging nest tonight, having presumably determined to his satisfaction that Archie was not going to use it. Hummer as usual. The humming-bird is in his regular roost. November 7th. Hummer roosting time. The sun's disc was bisected by the western horizon as I reached the vicinity of the humming-bird's night roost. Just as the upper edge disappeared there was a whir of tiny wings and the hummer suddenly landed on his regular roost for the night. I moved down to Rhody's tree. He had already retired and sat with bill pointing directly toward the sunset point, now well south