1638 No other bird was with him. At 1:50 he decided to climb his pine tree and renew song from there. 5 minutes of this brought his mate(?) running from the north east along the road. She climbed up at once. No greeting sounds were heard as song momentarily ceased. Character of song now changed (after 5 minutes or so) becoming softer as if (as it no doubt was ) intended for the mate. A few minutes more and Neo shifted across the low roof of the house to a tree close to the north wall. His mate now began to scrip from her place in the pine. Soft song now came from Neo's direction. N2 went there via the tree tops and the roof, scrapping en route, but stopping on arrival. I came in to write this note.. (Incidentally this episode bears upon the matter of thrasher song when it is fairly warm: referred to in first paragraph of this date). 2:40. The light sea breeze which usually arises about this time and keeps temperatures from rising too high has arrived (86°). By 3 o'clock Neo had resumed song, this time from his inner sanctuary. He kept it up there until about 4:10: almost constant song. He then shifted to the acacia at the east end of the cage and resumes, using now an entirely different set of musical and verbal phrases. Among them was that exceedingly rapid succession of syllables with striking rhythm introduced between phrases differing completely in time and timbre. The nearest I can approximate it is: Teh taah teh teh, taah teh teh, taah teh teh taah This was uttered in almost a monotone; the underscord syllables strongly accented; time: faster than I can make the sounds. At 4:20 he sailed down into the Nichols place and began to dog. He was all alone. (79°) Cloud over sun. Rhody, after his one o'clock mouse, retired to an acacia near the end of the row in which his optimum tree is located. Pre- sumably this latter tree no longer furnishes optimum distribution of light and shade under temperatures such as ruled today. At 4:20 he was still in the same place in the same tree, but beginning to be interested in events of the outside world. At 4:45 he came down for his mouse and headed for house No.2. September 10th. (Sunrise 5:47; sunset 6:27). First thrasher song was heard at 5:40, although there may have been earlier. 1:10 P.M. There has, I believe, been no time that the thrash- ers have been silent since first heard. I have seen no full-sized conventions as yet, but there have been gatherings of three or more singers several times at this place and song by Neo has been the usual thing today. When three thrashers were singing here, about 8 A.M., one of them in Neo's pine, imitated the call of the plain titmouse frequently and so successfully that I had to make a special effort to determine that it was the thrasher and not that bird. The par- ticular call went: Tsk cadet, cadet.....cadet..... After this phrase the bird often said: Perfect, perfect...... A little later he had a run on Pickwicks