by this time. He found it several times, but as with the mirror, just at that moment was attracted by the magpies, so had to turn his attention to them, losing bearings in the meantime. This necessitated his rediscovering it on a subsequent tour. So far I have observed nothing in connection with any of the birds at this place that would indicate that they have any "sense of direction" superior to that of man. Absent until 4 P.M., at which time Rhody was found in the cage teasing the magpies. April 10th. At 7 A.M. he was doing the same thing. From 7:15 to 7:45 search was made for the young birds without results. At 7:45 Rhody was inspecting the interior of the glass house in the dorm. I made another round of possible places that A and T might favor, again without results. At 9:50 Rhody was again in the cage, not seeming to be worrying about the absence of the youngsters especially. He was very much at home, preening, resting and having occasional bouts with the magpies, sampling the food, etc. He came out after 25 minutes and wandered over to me to look into the worm situation. After this he loafed for a while, then went up to study the glass house again. Clearly this structure is on his mind as a possible nesting place. About 11:30 I was up at the glass house (which is entirely surrounded by foliage of the tree, removing a few twigs in an effort to improve it for Rhody. Happening to look down down at the ground, I saw Rhody with a large mouth full of weed stalks, looking up at me like a dog. This weed has gray-green, velvety leaves and stalks, and when dried, as this was, would make good lining. It was not, therefore, suitable as starting material for a nest and I was curious to see what would happen. After ap-pear-ing to consider the matter, Rhody trotted off and carried it to his 2--36. Last year he started four nests, finishing only the last: the birthplace of A and T. He had a mate from the placing of the first twig in the first nest. This year he has no known mate and has started two nests, but plainly has the possibility of a third in mind, though still working on the second. The evidence is not sufficient to show, assuming Rhody to be a typical male roadrunner (not necessarily a warrantable assumption whether cock birds build these nests as decoys for a mate, as "cock nests" or as actual brood-rearing places built in the knowledge or the belief that the bird has a mate, actually. The only difference between the two years' performances to date appears to be that, last year, he actually had a mate (though I think with some uncertainty on his part as to the definiteness of her acceptance of him and his structures until the last) whereas, this year he appears to have no mate, but gives every evidence of having considered A or T (presumably T) as a distinct probability. Perhaps he still does, and really knows where to find T. (Note finished at 12: o5). After writing the foregoing note I went to the cage, finding R there as expected flirting with the magpies. He came out soon and went to the roof of the observatory, thence to the highest chimney of the house, where he sat until 1:05 (About an hour). He kept his bill open, as it is a rather warm day, although, up there,