1257 Thrasher song was maintained at its usual (present) level. Nova and Brownie are much in company. Nova was heard singing her odd song near the oval lawn. As B did not appear to be anywhere about, it seemed a good idea to see what effect I could produce upon Nova by attempted imitations of B's various whistled calls for her. On about the third effort a thrasher was seen a hundred feet away running toward me in the driveway. Of course it was B. Nova kept her place, continued her song, with B answering from my knee with closed bill, in a peculiar series of notes that I do not recall having heard before. In vocalization, an extraordinarily versatile bird. September 15th. Thrasher song as usual. A cursory survey of Rhody's northeastern territory about 9:30 A.M. brought no results. Two hours and Ten Minutes with Rhody. At 2 P.M. I looked down over the same bank where he was lo- cated yesterday morning, but at a point about 150 yards further south and nearer home. I had accidentally hit upon the exact place, for there was Rhody sitting on a rock below me looking off over Dimond Canyon as before. He seemed to have no business in hand at all. I went down to him; he rattled-booed in recognition of my coming, but did not stir. I sat down 30 feet from him. He booed again. I exhibited the closed worm box. He took the hint at once, booming twice more. (Yesterday he was absolutely silent) as he came for worms to be tossed to him to catch on the fly. I now left the initiative entirely to him in order to see how he would comport himself. He moved off 20 feet and resumed his watch over the canyon, reacting to every sound and moving shadow. He is much more alert when afield. In about 10 minutes he came back to me and sat near my feet, back toward me, and continued to look and listen. I rewarded him with more worms. He again went off and again returned as before. The same action was again repeated, but this time he wanted no worms. He went around behind me part way up the bank, which pointed him in this direction. Accordingly I went up to the street and sat on the running board of my car. He could not see either the car or me from his place on the bank. A white cat came out to the sidewalk across the street. Rhody came up, saw the cat, and began a series of upward jerks of head and tail and pivoting about a vertical axis. The cat crouched and approached slightly. Rhody came around to my side of the car and stood watching me in the middle of the street. A rapidly approaching car applied its brakes on seeing him. R retreated to the curb, only. Next he strolled casually in the general direction of home. (Not visible from where we were). The cat followed a few feet then quit. While Rhody was inspecting automobiles lined up on a side street en route here, I hurried back to have a mouse ready for him; the idea being that he had meat in mind and would go directly to the cage for it and have no space for mice, whereas I wanted to see if he was completely "off" mice as he was yesterday. I beat him to the cage, but could see him running rapidly toward home across lots. I feel certain that he had the meat- picture in his mind, for he started to pass by me to enter the cage when I showed him the mouse. This he took, but immediately entered the cage after eating it and stood looking undecidedly at the meat. I had broken into his preconceived plan and he could not immediately readjust his faculties to the new situation.