1404. This was a day of temperatures running in the low seventies. March 7th. Low fog in the morning lifting about 9 A.M. Rhody was not in his roost at 8:30, but was found, on my re- turning, at the sage patch near his present favored nest. When I stood by him he cried and muttered alternately, then followed to the tool-house for his mouse. (See below). # He was more than usually vocal and active in performing his ritual, which as is usual, much resembles the giving of thanks for the offering, as his bowings and scrapings begin close to me. This mouse was exhibited at the mirror, but not to a hypothet- ical occupant of the cage, and was finally taken up to nest 2-36. At 9:15 R was sunning by the cage. He then began to stroll about, looked in at this window and now (9:35) is on top of the chimney connected with the fireplace of this room. He is abso- lutely silent. He has not been heard to sing for several days.# During his mouse-ritual I found his hroos easily audible at about 160 feet, perhaps more. (An Allen hummer appeared in the court while he was there). # (My neighbor across the street just told me (10 A.M.) that he was out at 6:30 A.M. and saw Rhody near my entrance at that time, and that he had heard him singing still earlier. This mod- ifies above statements). At 10:A.M. Rhody was in the open field to the south. A hum- ing bird dived down over him several times. I went to him and talked to him. He wanted nothing, so I passed on, leaving him sitting on a rock scanning the landscape to the west. I believe he continued onward to one of his searches for a mate. At 1:20 I was looking for bush-tit nests here, finding two under construction, and, when near the clearing a rattle-boo sound- ed from somewhere out of sight. In a few moments Rhody came out with business to the west, but when I turned east, he came down from the fence and followed to the tool-house for his mouse. This also was treated with full honors, a visit to the inside of the cage, to the mirror outside, to nest 2-36, where it was presumably consumed about 1:40. I was absent right after this until about 3 P.M. Rhody was found sitting quietly on top of the cage, remaining there until about 3:30, when he went to get a drink and loaf in the vicinity of the sage patch at the glade. Here he lay down flat on the ground and appeared to study the ground within an inch or two of him, first one side and then the other. He then made one tremendous stab at something on the hard ground, while lying down. I moved to within 4 feet. He still watched. I could see an ant now and then. This is what he was watching, for he made another stab at one, then wiped his bill hard, as if it did not taste good. This action appeared to be due merely to curiosity of a mild sort, as if bored with nothing to occupy his mind. It was now about 4 P.M. I had been observing that he was not opening his back to the sun at all during this period, whether in sun or shade, and inferred that air temperatures and conditions were probably within that hypothetical zone in which he feels no need for assuming a special pose to insure the proper degree of comfort. Further, as the light was somewhat obstructed by haze, I assumed that the humidity was probably such as to lessen the contrast which we normally find here between sensible temperatures in sun vs. shade. (On account of the stabil-