his bill. I now went back into the cage. R5 leaned out from his couch and "cried" also--for the first time today. It was noticeable that his cry was thinner, higher pitched and more quavering than R's, giving the impression of juvenility. Rhody appeared on the roof of the cage in a few minutes, went to have a look at R5 in his couch by the window (I think R5 cried at him, but am not certain) and then walked over to the dormitory tree, where he picked up assorted nesting material, decide on a certain weed stalk and carried it up and placed it in the nest in the glass house. After several minutes of quietude there, he came out for a 15 minute rest on the wind screen, then a longer one in the pine nearby. About 3 P.M. Julio brought a blue-bellied lizard he had caught R5 was up in his retreat, but when I held the lizard at the wire and called, he came down and out promptly and with little hesita- tion, took the lizard from my fingers. This is the first act of kind for him. The lizard was a stronger lure than a mouse. It was something in which he had specialized when free. It was also the first one that was offered him. Now it is a fact that he has nev played with a mouse, yet this lizard immediately aroused that in- stinct which appears to be common to roadrunners when in possession of a mouse. Without killing it, he laid it on the ground, and went through precisely Rhody's standard performance with lizards: Walking around it; pretending to ignore it, but catching it as soon as it started to run and repeating ad lib.until ready to eat it. (I imagine that the scratchy scales felt good inside after the exclusive diet of fuzzy mice, and that they will help loosen up some of the mouse-hair lining of his gizzard!) This lizard seemed to pep up Pepper (R5) for he was now full of life, even putting on a circus for the magpies who had crowded against their wire to watch the lizard. Rhody now came down to observe at close range and walked back and forth along the wire, Pep showing interest and bowing and hroo- ing once close to R. R now showed desire to enter the cage by the door; but he was not allowed to enter without bearing gifts. He came back and sat at the corner by my feet sunning his back and watching R5, who now sunned his back in front of R 10 feet away. There was no more excitement and R finally strolled away, and was found at his post in the west lot at 3:45, preening and "killing" a root which he had pulled out of the ground. I should have mentioned also, that, during the foregoing action of R5's he had also "killed" a twig. Rhody was not heard to sing all day. February 17th. The sun rose in a clear sky; no wind. At 8:15 A.M. Rhody was not at his post. At 8:20 " he was; but made no response to my calls other than to glance at me and look away indifferently. At 9:15 he was sitting in the top of the bushes at tree 8, having left his post, apparently, to avoid the smoke from a bon- firg across the street. He came down and sang his "full song" a dozen times or so, then went down the bank to the street. He did not want worms, even when I went to him and touched the end of his bill with them. Now began a slow stroll up the street toward the entrance, and by 10:15 he was at the mirror with a tiny twig, pressing it against the glass, but without display. He now carried the twig toward