1086 of west. The young road-runners had taken the same positions as last night. Brownie not in Brownie was not in the dormitory tree, nor could he be seen there at 11:45 P.M. As it is a warm night, he may have taken his alternative roost in the acacia, but it is almost impossible to see him there after dark. Archie repeats rain A curious reaction of Archie's duplicating his behavior to- ward rain noted on the 1st., was observed while Julio was sweeping saw-dust off of the roof of the cage. As the dust began to fall about Archie, who was standing in the open below, he bowed his head and spread his wings to catch it! (Max. during day, 69; Min, 49; temp. at 11:45 P.M., 56). RR tail-shaking. The tails of the road-runners are so long and flexible and they have such good muscular control over them that, like the black- billed magpies, they can shake them rapidly without moving the body at all, causing a series of waves to begin at the base and run out to the tip where, presumably, they are broadcast into space. November 8th. B back in dorm. Brownie returned to his regular night roost a little after sunset. Hummer The hummer occupied his regular roost. A and T. Archie changed back to the hanging nest at bed-time. This left Terry again at a loss where to sleep. Twice he approached Archie as if to climb into the nest with him, but was repulsed each time, the second time Archie pulled a billful of soft feathers out of him. There was no outcry. I then induced Archie to take up his new resting place in the extension, but Terry had already reconciled himself to his usual second choice. 10:35 P.M. (Temp. 49). A and T are as I left them at night- fall, the hanging nest being unoccupied. (Cloudy). November 9th. Speculation on binocular field of view of road-runners. I have often wondered if the fields of view of the two eyes of the road-runner overlap, and if so: where? Especially: Can he see the end of his own bill? If the fields of view overlap, one would assume that he has binocular vision, though perhaps un- warrantably. It is a little difficult to make measurements of a living road-runner that is perfectly free--not held, even when he is as confiding as Archie and Terry. However, I did measure Archie's length of bill and distance between eyes; although he did not ob- ject, he wanted to nibble the rule and find out what it was all about. I have always noticed the extreme mobility of the eyes of these birds and that they can direct them well towards the front. Looking at the bird face to face at a distance of, say a foot or so, one is able to see (even with one eye closed) both pupils and the surrounding brassY ring in their entirety. Both are circular, but necessarily appear somewhat elliptical, due to foreshortening, when viewed as above. The amount of ellipticity is, however, surprisingly small. At various times I have guessed at the angle which the optical axis of the eye makes with a line drawn through