radiation to the sky was a factor in their favor. We also appear to have here an example (bearing in mind that humming birds are now courting) of two males, under conditions of great stress, seeking each others company for warmth and roosting as close together as they could get, forgetting their natural antagonism. There is, of course, a possibility, perhaps remote, of the juvenal bird being an offspring of the adult and there being some vestige of attachment between them. This, however, seems highly improbable, especially in view of the reputed indifference of male hummers to all parental obligations. There is also another possibility, and that is that the smaller bird is a female, and they are mates. In the hope that they will soon be able to feed themselves, I have made a "flower" out of a small vial (having a capacity of 8 cubic centimeters) and a piece of red crepe paper, and placed it in their cage, filled with the food mixture. January 23rd. At 8 A.M. the little hummers were full of "pep". I prepared more food for them and had visions of hand-feeding operations conflicting with a wedding at San Mateo at 4 P.M. (G.K.D.). Fortunately, as I was about to catch the first one and feed him, he went to the flower and began pumping vigorously. He was soon followed by the other. Thereafter all I had to do was to see that they did not run out of food. That part of the problem was solved. They also drink water freely from the vessel in the cage. Of all the wild birds I have made friends with, these are the most fearless of man. They seemed to accept my presence and action as a matter of course. They do not hesitate to sit on my hand when it put it in the cage, are not annoyed by rapid movements, do not show fear when spoken to at a distance of a foot or two and do not try to get out of the cage. They are tremendous eaters, (for the present at least), and, incidentally, never have I seen any creature that evacuates so frequently. I had little opportunity to contact the two road-runners and Brownie during the day, though all of them had their usual "hand-outs" before I left. January 24th. (Cold wave broken? Temp. in court 9 A.M. 46). The little hummers seemed perfectly fit in the morning. When I carried them to a sunnier room, it was interesting to see how one of them remained in the air during transit with coming in contact with either the wires of the cage or the perches--he actually flew, while in the cage, from one room to the other and ascended three steps; The other remained on his perch for part of the time; part of the time in the air, and the rest of it eating out of the "flower". In renewing their supply of food, the red paper was removed from the vial . Its absence seemed to make no difference to the birds --they found the food just the same. At 10:30 A.M. Rhody was still in his roost. About noon he came over the fence to get his first mouse of the day. At 2:30 P.M. I found him at the cage, with R5 on the ground in the outer cage, R looking at him. There was no displaying by either bird, but R5 picked up pine-needles, carried them about a few seconds; dropped them and picked up a stone and carried that