1265 Judging by mater ial used, B's action merely reflex. Nova ignores B's nest behavior and catches grubs. small fibrous material up into the same place as on the recent previous occasions, and work on the surrounding growing twigs. The place is less than 6 feet from one of his last year's nests. ( No. in the oak at the oval lawn). From past observations activity of this kind can not be considered as representing serious intentions unless and until the material carried is of a character suitable for the sub-struct- ure of a nest, i.e. composed of large, strong twigs. Nova paid no attention to B's behavior and continued to ex- tract worms and grubs from the lawn without damaging it. After 10 or 15 minutes B's interest faded and he resumed full song, nearby wanderings, renewed applications to me for worms and contact-conversations with Nova. During the rest of the day Brownie sang a great deal, as did Nova (for her) and other thrashers abroad. Rhody behaved consistently with present trends, more interest- ed in meat than mice. September 27th. B "works" at invis- ible"nest". Brownie again, during the forenoon, worked at his invisible nest at the same place and point as before, about 8 feet up in a cotoneaster (Cotoneaster pannosa). At present there appears to be nothing there, his work consisting principally in bending twigs (which flop back again) away from the preferred space. B and N sing duets. He and Nova sang duets most of the forenoon (other thrashers in the distance) and altogether the thrasher world was pervaded by an air of excitement. B sing-digs after long refraining. Brownie, at times, goes back to his early sing-digging and various types of undersong at times when he does not seem to be much concerned by the activities of other thrashers. His under- songs, as when first under observation, are often of long duration (ten minutes to half an hour or so) with mimicry reappearing (quail, hen, thrush, meadow-lark flight song, etc.). Mimicry. Thrasher song-cycle at peak(?) Thrasher song cycle seems to be at its height, though the full songs are not of the highest quality heard from Brownie. They are inclined to be of the "imperative" type noticed previously. Nova's are still staccato and pitched high. September 28th. B takes first properly select- ed material to "nest". Brownie's nesting reflex is still more or less active. About 9:30 A.M., when he left my knee where he was sitting and eating worms after a long period of song, he carried a good-sized twig up to his new nest space and fussed around with it intermin- ably, so I left. Police dog locates Rhody's roost? Mrs. Scamell called up a little later to ask if I knew whether Rhody was all right, as twice, she has seen that police dog standing up on its hind legs under Rhody's roost tree looking up into it.( This is about 200 yards from the dog's home). She had not seen the bird this morning. I investigate. I went down to have a look. The dog ran out, barked at me and followed me towards the Scamell house. I found Rhody just coming out into the street there. When he saw the dog he ran and flew down hill to the south west. I turned the dog back and went down to reassure the bird. R, sitting on a fence, waited for me to approach within fifty feet, then came to meet me, taking worms