half hour, to return to the cage for a visit with the magpies. This becoming boresome, he wandered near aimlessly until it oc- curred to him, on running across a twig accidentally, that it it might be a good plan to take it to 2-36, which he did. During the rest of the day he returned frequently to his study of the magpies, had another young rat with the usual trim- mings, nest 2-36 again being selected for its consumption . Now (5:15 P.M.) he^ watching every movement of the magpies from his perch inside of the 12 x 12 extension, with an air of intense concentration. About 2 P.M. I found one of the young thrashers alone. In a few minutes he was taking worms from the palm of my hand. Brownie came, followed by the other one, and fed both faithfully, with no tricks. April 25th. About 8:30 A.M. Rhody was out on the high lot to the S.E. where Selborne Drive joins Estates Drive. I went out to identi- fy him positively and when I returned he trotted along behind, almost like a dog, following me to the shop. Instead of coming in, he saw a twig in front of him and took it up to the observatory, flying down to land at my feet when I showed him a young rat. After the usual evolutions, including the mirror act, he went with it to 2-36. (Absent until 3:30 P.M.). On returning found R in the cage. The rat act was again repeated. His favorite nest seems to be 2-36, though he still likes to rest in 1-36. 3-36 seems to have been definitely abandoned and 4-36 (the glass house) has not been visited for a day or so. April 26th. Rhody always does something to nullify my tentative con- cclusions! At 8:30 A.M. I looked around for him without success; then I heard the glass panes in the glass house rattling slightly, and there he was. He paid no attention to me, but tore loose twigs from the inside of the tree that had been shade-killed and placed them in his nest in the house. At 8:50, after writing the forgoing note, I returned to watch operations on 4-36. No Rhody, but a rattle-boo sounded from the direction of 1-36. R was found in it whining and looking down at me. I returned to get a young rat and on my way back to the nest, saw R approaching. He quickened his pace as he saw me, took the rat, bowed, etc. and returned to 1-36. He did not go to the mirror (Too far away?). Although I was absent during the next two or three hours, Rhody was seen to enter 4-36 twice more up to 12:20. The last occasion was preceded by his discovery of a brown towhee nest in the same tree, about 8 feet from the glass house and 2 or 3 feet lower. I had not seen it before. He went over to it and stood looking down into it for perhaps a minute and then went up into 4-34. Examination of the towhee nest disclosed two eegs. Thus, again, Rhody rejects birds' eggs as food. However, when and if a brood is reared in the nest, (or any of the eggs hatched) I shall have none too great confidence in his ability to resist temptation. About 2 P.M. Rhody descended from nest 1-36 where he had been "resting". He appeared in a receptive mood, so I walked slowly