1348. At 4 P.M. I climbed the bank to make absolutely certain that R was not in his roost tree, when I heard a slight sound behind me and he was just arriving at position No. 1 in the ladder tree. At 4:16 he jumped to his roost. (Sunset 5:15, temp. in Clear'g 53). Reviewing today's happenings, wwe note: Increasing tendency for Rhody to stay nearer "home". (The same might also be said for B). Increased interest of R in R5. R's adherence to the conception that the shop-yard should be the terminus of my march to get him a mouse; his ready renewal of the act of following me there after a long period during which it was performed only once or twice. His quiet "study" of R5, and restrained attitude toward him. His first twig-carrying action for months, followed by im- mediate presentation to the mirror . His late retirement to his roost. (clear and sunny at time) first R5's increasing tolerance of my presence outside the cage. (There was a second example later--not recorded). R5's apparent lack of fear of Rhody. His abstemiousness as to mice. (He ate only one today). His first noted picking up of an object and "killing" it. Rhody's failure to sing and the voicelessness of the two birds in each others presence. In all this there was no positive light thrown upon the m matter of R5's sex. It might be considered that Rhody's twig- carrying was a nest-building reaction stimulated by the presence of a supposed female (R5) and his gentle behavior toward that bird might also be considered as pointing in the same direction. But, on the other hand, we have R's unprovoked attack upon R5 when he was first introduced the other day and R5's bright skin colors as perhaps contrary evidence. January 17th. At 9 A.M. (Bright and clear) Rhody was already up and at his post. He would not come to the clearing on call. (46 in Clear'g). At 10 A.M. he had moved nearer to the fence and cried when he saw me. He then came over, but I had no mouse for him and started for the shop, expecting him to follow, but he did not, for when I returned with a mouse, he was back over the fence again. However, he returned quickly. Sometime between 12 and 1 he went to the cage and ate a fresh- ly killed mouse put there for him. At 1 (visitors present) a glimpse was caught of him at the mirror, but looking up at R5. At 2 P.M. as I was looking for him in the orchard, he cried and rattled his beak as I was about to pass him. A few minutes later, while a nephew stood beside me, he came up the bank to us and took his third mouse of the day--much to my surprise. Evi- dently his appetite is improving. It is a long time since he ate three mice in one day. (I had bet him a dollar that he wouldn't!) At 3 P.M. I saw him apparently headed for his roost. R5 had eaten nothing up to about 2:30 P.M. A dead mouse had been put in the sand box in the cage for him last night and it was untouched. Thinking he wanted a live one, I held one about a foot below him. He dropped down past it and ate the dead one almost at once. Yet he had passed it up for hours. Up to 4:30 P.M. he had not touched the live one placed in his can at the time he refused it. He was now very restless because