1567 Rhody wants his mouse early. Rhody was clearly intent upon not losing sight of me and more than anxious to receive worms, so I turned toward the tool-house, followed closely by him, and gave him a mouse. As measured by recent behavior, this is early for him. Perhaps the one mouse per day is not precisely commensurate with his requirements. If not, he will probably want another one before bedtime. It remains to be seen. Rhody now went to take up his station on the low eucalyptus branch at the sidewalk. Neo learning meaning of flick of wrist. At 10:20 I invited Neo out again, getting quick response. He continued to talk to the invisible other bird. It should have been recorded at the time it was first observed; but Neo has learned the significance of the slight flick of the wrist which I make in tossing worms to him back-handedly. I have repeatedly made this gesture with no worm in hand and he almost always responds by moving up closer, if not already at his present nearest limit of approach. On this occasion this response was repeatedly verified. By moving a little farther from the fence, he was induced to stay with me indefinitely, sitting about 8 feet away, preening while waiting for more worms and addressing "remarks" to the other bird, the approximate location of which he indicated by his glances and the direction of his calls. He has a tremendous appetite for meal-worms. Neo's eye col- ll A.M. After a ten or fifteen minute session with Neo, during which his iris color was repeatedly identified with that of Brownie, I left for a few minutes. On approaching the sage patch a thrasher ran quickly away along the path to the orchard and almost simultaneous- ly, Neo climbed the small redwood in the sage (10 feet from me) still talking. He soon came to my feet for more worms, taking all I would g give him and showing no intention of leaving. The other bird now appeared and began to dig on the south side of the sage about 20 feet from me, but left soon. I came in to write this note, leaving Neo in possession of the field. 11:30. I went out again at 11:20. Both thrashers were in the sage patch. Neo ran out toward me and, when I crouched in the path took worms just out of my reach, still talking to the other bird (who remained) as long as I furnished him with worms. Once I thought he was going to take one to his mate (?) as he carried it about for perhaps a minute, then brought it back when I tossed him another worm in order to see if he would make a collection for the other bird. Instead of doing this he ate them both. He did not depart until I stood up and came away. So far, he appears to be the "worm-eatingest" thrasher I have ever seen. On this occasion he used phrases in his talk not heard previously. Neo would not accept ant eggs. At 11:30 Rhody was still on his limb in the gum tree. At 1:55, at which time he was at the cage, he craned his neck to watch me as I walked away (To see if I was going to the tool house? As I did). He then came down and had his second mouse of the day, as foreshadowed this morning. (62°). At 4:27 P.M. he made his last leap to his night roost in the eu- calyptus, having spent all of his time since 2 P.M., as far as known, within 50 feet of that tree. Dec. 18th. (Sunrise 7:20, sunset 4:52). Early thrasher song this morning. On following it up at 9:10 it led to Neo, who was ready for worms. (56°). Rhody was still in his roost at this time. (Sunny; north wind). By 10:10 he was down and wanted no food, in contrast with yesterday