ground, breaking off portions (these long-dead oak twigs are brittle) with the apparent intention of making them easier to transport through the tangle or else of size and form better suited to the requirements of the structure at the time. He showed no signs of wanting food of any kind. 10 A.M. Rhody changed his mind about the food question and on coming down from the nest, walked over to me expectantly. We went to the tool-house for his mouse. He took it with full ceremony to the mirror, returned along the route had just traversed, out the side gate to the street, hence to the Scammells' window, back across the street and then to his house in the roost tree. His new nest cut no figure in his plans at the time. About 1 P.M. I found him at work again and then left, to return about 5 P.M. I found him outside the cage not interested in anything at all. He did not acknowledge my arrival upon the scene in any way, yet when I walked off toward the tool house, he came and cried for attention. He was not enthusiastic about the mouse, but took it, turned his back on me and, for 10 minutes held it quietly in his bill, making no movements other than slight ones of his head, and no sound. A rattling car caused him to retreat 6 feet to a low branch, where he finally ate the mouse after another long period of quiescence (about 10 minutes). About 5:45 he decided it was time to go to his roost, hruh-hrooed, trotted down over the new earth piles on the lower road, dusting at intervals. When he came to the terminal bank he faced back toward me, jerked up his head, gave one sidewise swish of his tail, turned about and jumped off. The period following 5 P.M. appeared to be one of almost complete indifference to all outside objects and affairs: a not unusual attitude of his when he has been well fed and there is not enough left of the day to warrant undertaking any serious operations. April 23rd. At 8 A.M. Rhody was sunning and preening on the observatory roof. He landed just outside this window at 8:45 and went at once to his nest. On making inquiry I found Julio had given him a mouse at 4:30 yesterday; Rhody had caught a mouse in the cage at about 3:30 and had spent a large part of the afternoon there. Under the circumstances his later lack of enthusiasm is not surprising; in fact it is rather surprising that he took the mouse from me at 5:10. At 10 A.M. he was still working. I did not see him again until 5:10 P.M., when he was in the act of carrying a large lizard up to his nest where it was consumed. In 15 minutes he came to the oval lawn where I sat and tried to get a drink at the pool, but could not reach down to the water level. He jumped across the pool to stand by me quietly. I said: "Come with me and I'll show you where to get a drink", and walked off along the driveway. When I had gone about 50 feet he came running fast. Another 50 feet and I pointed to a glass of water under a hydrant, stopped, pointed at the glass (which was about 8 feet off of our course) and said: "There's your water; go and get it". He went over at once and began to drink thirstily. Now this is not one of those instances where I anticipated his actions and gave "commands" which a bystander might think he understood and obeyed. I had no thought that he was going to the glass for a drink, and I do not think now that he had any such intention as regards that specific drinking place. Of course I thought he was thirsty, but I had never invited him to follow me