Their greeting action. As previously noted they greet human friends by lowering their heads to the level of their feet and ma-ing (a as in hat). As with Rhody, this sound is heard on no other occasion--one wonders about its origin. They did not make it in the nest and Rhody proves that it is also an adult call. Listening attentively, one distinguishes two simultaneous notes of different pitch, slightly dissonant, but pleasing and plaintive in quality. They do not keep it up as if begging for any- thng, but stop when the friend reaches them and often pinch a prof- ered finger, releasing it within a few seconds, then subsiding contentedly. It certainly does not appear to be a plea for food. Often they will make this call when one is at a distance and can not hear it, but can tell by the posture assumed that it is being made. On reaching them, it is found that they do not appear to want any- thng material at all. "The" fly on Archie. Reaction to sounds. Watch ticking. Reaction to gold nil. Eye patches. "Halo" Bird books speak of the bristles that project beyond the feath- ers of the head and neck. On A and T these are very fine and soft, not at all like bristles. When touched lightly I can not feel them. They can be seen distinctly only against a light back-ground and then it is seen that they cover not only head and neck but shoulders as well. When lighted from the far side they appear as a halo and are surprisingly numerous. October 19th. Jays mob a screech owl. Brownie takes part as a Steller jay. Panic of A and T. It now develops that Archie (presumably also T) has these pests since one of them was seen walking around on top of his head. It looked just like Brownie's friend. These birds appear to react in some way to every sound that reaches them and seem to be listening to something all the time. A watch was held to the ears of A and T . T first shook his head slightly in the nervous manner first noted when he was spoken to when very young, tried to eat the watch, then paid no attention to it while still held within an inch or so of his ear. A's reaction was the same, except that he did not shake his head first. Neither was annoyed by its color (gold). Archie's skin patch still seems to be a deeper shade--though but slightly--than T's. I can not detect any change in the faded apricot portion, still far less colorful than Rhody's. At intervals of a few hours during the last three days, Califor- nia jays have gathered in an oak near the eastern boundary line of this place, and scolded raucously, gathering many different kinds of birds to lend a hand at whatever was afoot. These birds were kinglets (but recently arrived), the two kinds of towhees (8 or 10 Of the Brown), a thrasher or so, goldfinches, wren-tits, plain titmice, Nuttall (and/or Gambel) sparrows, etc. When I have gone out to look, the jays have always fled, leaving no clue as to the focus of infection. Repeated search has revealed nothing. At about 3 P.M. They were at it again and. mixed with the Cal- ifornia jay cries, the harsh scolding of the Steller jay could be heard a little apart from the main group. To my surprise it was Brownie who was the "Steller jay"--his first noted example of this particular cry. Prolonged search revealed a little screech owl, tucked away amongst the leaves near the tip of a high branch, as the cause of the disturbance. 5:30 P.M. They are at it again, but B is taking no part. About 3 P.M. I approached the cage with four visitors, two men and two women. The youngsters got panicky when we have in sight 20 yards away, and were unapproachable,