R undoubtedly does purposely make his presence known at times. Not interested in rats and mice, but is in lizards but only for "sport" Manages two lizards simul- taneously. Displays with them. Loses interest in one that dies. I stimulate his interest in death one tempor- arly, but this suggests to him a search for a hypothet- cal live one. R in nest 4-36! Experiment with death lizard re- ewed; same re- sult. Rediscover the dead one. Disgusted? A live mouse substituted. Returns to nest building. passed, announced that he was there. This proved to be his last use of this call for the day. From the frequency with which this sort of behavior has been observed, it is impossible to resist the conclusion that the bird, on such occasions, is deliberately trying to attract my attention. He followed up by coming to the wire netting, still inside, at the point nearest to me, reaching through the mesh to take worms offered. At no time during the day could he be interested in mice or young rats. About 3:45 P.M., when he was up in nest 5-36, a live lizard was thrown up into the tree. It caught and held to a small branch a few feet from the nest. Rhody, with h great de- liberation, got it, came down and displayed with it before the mirror and elsewhere, let it go, chased it, over and over again. A second lizard was then put before him. He was able to handle them both, due to the lizard habit of playing possum, chasing first one and then the other, not trying to kill either, not trying to prevent their running into the bushes (apparently), interested only when they ran or made movements preparatory to running. Each would occasionally be brought back to the mirror with hroos and bowings. When one of them finally succumbed to the rough treat- ment and could no longer run, Rhody lost interest in him (he will reappear later in this note) and turned his attention entirely to the other. I am not certain, due to the fact that R became pro- gressively more careless and much of the later action was in the bushes, but I think that one finally escaped. At this stage my thought was that Rhody wanted no food of any kind, and, in every-day language, was simply playing. Previous to the lizard episode I had thought that his disinclination for mice meant that he was temporarily, as on previous occasions, "off of" mice. About an hour later when Rhody was resting on a pile of boards by the dormitory tree, I showed him the remaining, now dead, liz- ard. He was immediately interested, picked it up, squeezed it, dropped it and walked about it waiting for it to run. This was repeated twice again. There was no running. Rhody then began a search for a hypothetical live lizard in the pile of boards, since the dead one offered no possibility of sport, presumably. No results, so he climbed high up into a pine tree by the north wall of the house, for which he has conceived a liking during the past few days. The lizard was kept for further test tomorrow. June 20th. I looked for Rhody about 7:50 A.M. Julio pointed him out, just coming out of the glass house (nest 4-36) in the dormitory tree, which I had just passed. (There is the same picture again, with the house added). He perched on the wind-screen. I got the defunct lizard and laid it on top of the pile of boards. R was all attention, came down, went through the yesterday's effort to extract some fun out of it, found it wouldn't work, quit and went to the observatory roof via the pine tree (first time noted). An hour later I stood near the boards. R sailed down from the roof ran swiftly sidewise the full length of the pile (20 feet) with his eyes upon the cracks, found the lizard, considered it, but turned toward me and rattlebooed as if in disgust. Certain- ly a man-like action. My thought was: He rembers the lizard- board association, he has not forgotten that there is no fun in that particular dead lizard, he wants food, but is, as always, disinclined toward dead things, so we'll see if a mouse will sat- ify the equation. Before I could put the idea into execution, however, he gathered nesting material and carried it up high in the pine tree mentioned, where I could not see him, but could hear