under-song. 1:30 P.M. The question is often raised as to whether dusting birds also bathe. Until this moment I have never had anything positive in the way of evidence on this point. The Vigors Bewick wren at this place is a persistent duster, sometimes dusting many minutes at a time. Just now one was seen showing signs of trying to bathe in a vessel which is kept under a hydrant, but the water was beyond his reach. It was then filled with water and the wren returned at once and had a thorough bath. Of course, it is not certain that it is the same individual that has been seen dusting. August 9th. B returns to dorm. B and Bb were observed in their roosts last night. Bb was in his accustomed place, B had returned to the dormitory tree. Perhaps because it was somewhat windy. So far this hypothesis has seemed to fit. There was early morning full song. Release of aged thrashers. at Reynolds Pat first out. Somewhat before 10 A.M. Dr. Reynolds and I opened the door of the aviary in which Pat (Little Brownie) and his new friend, Neo, have been confined, and left it open. In about 15 minutes Pat wandered out and began to attack vigorously a hole in the trunk of a pine tree about 6 feet outside the door. He extracted what appeared, from a distance of about 20 feet, to be four beetles. He then returned to the aviary, where he dug. He went back and forth several times unhurriedly, finally seeming to realize that there was something unusual about conditions, he jumped to the top of the wall, scripped loudly, then wandered about calling queelick. When I left about 11 he was digging under the chestnut tree near the north end of the aviary. Neo comes out. Neo came out after Pat's fourth appearance and immediately attacked the same hole and got 5 or six things to eat. He then inspected the cracks in the bark and endeavored to tear off the bark. After going back into the aviary once or twice, he busied himself about the garden and was contentedly digging when I left. Both birds seemed to accept the new arrangement philosophically and maintained the same attitude toward human beings as before they were released. August 10th. Early song. There was fine early morning song.