Terry demonstrates why tail support necessary. About 10 A.M. I was watching Terry dozing on a perch. His eyes gradually closed and he lost his balance, catching himself just in time as he was about to fall off of the perch backwards. This incident suggests a reason why road-runners seem to prefer flat places on which to sleep and why, when none is available, they select a place where there is support for the tail. B begins "thinking period" in nest. On two visits to the thrasher nest this morning Brownie was found sitting in it quietly doing nothing. This seems to be the beginning of the "thinking period" in the nest observed on previous occasions. Nest 12. This nest is in the kangaroo-thorn in the "chaparral" patch on the south bank--the same shrub where nest 10 and nest 2 were built. Bed-time behavior of A and T. I do not understand this situation at all. Neither A nor T would go to his accustomed sleeping place. Archie was more at a loss than I have ever seen him before, he even tried Terry's trick of settling for the night on my shoulder. I wondered if there would be a dispute over this place, so waited to find out. Soon Terry came, saw Archie in possession, uttered a rapid succession of soft ocks, did not hesitate a moment, but crowded in between Archie and my neck. A promptly departed without there being any fuss about it, but later, T still being on my shoulder, tried the top of my head. At last, at 5:40, he saw the new bed made for Terry yesterday, apparently for the first time and decided to use it. At 6 P.M. when I left he seemed definitely settled there and Terry was still homeless. Archie steals bunk intended for T. At 7:30 A was still in Terry's new bed and T for the first time in months was in the old sleeping place shown in sketch on p. 1042; this selection having been made perhaps on account of its being easy to find in the dark.. I shifted him to Archie's hanging nest, since it is better protected and was at one time Terry's favorite place, and also as a sort of joke on Archie, with the further object of developing whether this new disposition of the youngsters would result in friction between them when it gets light enough for them to see what has happened. Night docility. When handled after night-fall both birds are extremely docile, do not shrink on being approached or touched and do not struggle when taken in hand. February 17th. to 19th., incl. Weather "unusual". According to the evening papers (19th) we have had an "all time" record rain-fall during the past ten days--about 6 inches-- with some rain every day. Temperature have been running about 60 max. and 50 min. During this three day period there has been little change with the birds. Brownie usually to be found somewhere near the nest, but working little. Somehow he manages to keep dry. Rhody quite normal, singing occasionally, sometimes within reach of my hand, also keeping dry, still roosting in the pine. The young roadrunners are still uncertain about their sleep-