of his customary ritual. (Got about 4', f5.6 , 8'dis. Bright). (The towhee nest was examined and found not quite ready for eggs). Rhody was about all day. In the middle of the afternoon he went up about 20 feet in an oak 30 or 40 feet from the cage, cried when I approached, began breaking off twigs and placed them in a new place in the same tree. He did not keep this up long, so I doubt if it is intended as a nest. It may have been only that strange reaction to my presence, which looks as if were trying to convince me that he was not loafing, but engaged in serious enter- prise. He chose No. 1-36 as his principal resting place for the after- oon, coming down about 5:15 to visit the cage. I called to him from about 40 feet away and moved toward the shop to get a mouse. Although he could not see me after I had walked a dozen yards or so, he soon appeared at the door whining. He watched my actions knowingly as I fished out a mouse a couple of yards from him, took it unexcitedly and, in the absence of the mirror, used the tool-house window instead. He then proceeded down the driveway, bowing, wagging and hrooing softly every few feet, thence up to No. 1-36. He did not go to the regular mirror at all, being evidently satisfied with the window as a substitute. Now it seems quite clear that following a human being to a house by a devious route in the expectation of getting food forms no part of the inherited mental equipment of roadrunners. Conse- quently Rhody learned from his own personal experience (with me) that a certain behavior on my part, if matched by a certain action of his, results in satisfaction of a certain want of his. This requires intelligence, for, to paraphrase Major Hingston (Instinct and Intelligence): Instinctive action is independent of instruction, is unassociated with any reasoning and while it has a definite end in view, the individual is ignorant of that end. Rhody's action was not, therefore, an instinctive one (ex- cept after he got the mouse) because he learned, associated effect with cause and guided his action accordingly. After he got the mouse his action was probably mostly instinct- ive, yet I think, even then, he showed intelligence by quickly abandoning his display before the window; that is, he had learn- ed from experience that no good came of prolonging it. Re- member his initial bouts of several hours with it. Aside from the difference in length between present andpast performances, it is interesting to note the difference in other respects, bearing in mind that, at present, he is seeking a mate, whereas, when he first got acquainted with the mirror, he was not. The earlier affairs were accompanied by widely spread tail and wings, much posturing and shifting of position, pecking at and behind the mirror, etc. all to the point of exhaustion, and appar- ent inability to quit, with many returns. At present the object is merely pressed against the glass and the tail wagged sideways, with bowing and hrooing (if it is food), but without, if it is nesting material. He leaves without reluct- ance.