763 not disturbed by taunts. responded to my taunts of old age and inability to catch the younger on that account, by opening and closing his eyes with sleepy gurgles. However, he saw Bb again before I did and started toward him Though they were only about six feet away I had to go go about 50 yards to get on the lawn side of the bushes where they were. On arrival B was found sitting quietly on the edge of the grass doing nothing and Bb about 6 feet from him hopping about cheerfully in the bushes. B soon began his undersong again and from Bb's direction came an undersong of similar volume and quality, adult in character. Neither contained imitations, and as I left, B was just settling down to another period of song. Bb still here. At 2:55 a casual glance shows Bb eating at the station at the oval lawn and B not heard or seen. The chase, then, has ended in no removal of Bb from the place where he began. B's strategy. The impression gained of B's present policy is that he is relying on making it mildly annoying to Bb to remain in his (B's) immediate neighborhood, trusting to time to effect a final separation rather than to force the issue. There is a question also, whether B by physical means alone, without the aid of Nova, could accomplish this result. There is no evidence that he has such aid, at least in respect to Bb. What Nova and Nb are doing is not known. Sept. 10th. B starts nest? 12:55 P.M. At this moment Brownie seems to think that he is building a nest in his night roost, but only time will show how serious are his intentions. From time to time he bursts into full song, as if calling to his mate to lend a hand. Early song was heard mostly before 6 and the morning was relatively quiet, though B sang occasionally and whistled his musical phrase is recorded for the first time on p.474. This phrase so human in quality that it is startling. B has platform. 1:10. Brownie actually has a slight platform constructed at his