found settling himself for the night. (Sunset 7:15, Temp. 62.) Though not recorded, the same roosts were occupied last night also. Curious how regular these birds are. Roosts of Nova and Nb have not been located. August 8th. Early morning trio. At 5:15 A.M. I became aware of outside sounds near my window and soon discovered that not less than three thrashers were singing full song in the vicinity of the house, and possibly four. Until 5:45 there was no period during which full song was not heard on one side or an- other, close at hand. At 5:45 it faded away. I went from window to widow on the upper floor and am positive of not less than three birds. This is the greatest concentration of thrasher music to date. While the concert was in progress one of the young birds was foraging quiet- ly on the lawn below, evidently not interested in the performance, but automatically eliminating himself from consideration as a partici- pant. While the singers shifted about more or less, there was no evidence indoors of pursuit, although at about 8:30 there were no th thrashers in plain sight about the place, and no thrasher sounds. B--1/2 song Later B appeared silently in the glade as I was filling the dishes, came for worms, then retired to one of his favorite perches 12 feet away and sang quarter song continuously for 11 minutes, when another thrasher, believed to be Nova, came up behind him and made a soft scolding sound, whereupon he stopped abruptly, walked toward me with- out looking at the other bird, began picking up and dropping soap- root fibre, climbed a tree behind me, sat quietly there doing abso- lutely nothing except for an occasional phrase or two of imitative sub-song. I left him there, inactive, a relatively rare state for him. Nova comes. B gathers material. Drops it. B silent! Seed eating. At 10:30 both young birds were at the oval lawn. One of them stuffing himself with cracked chick-feed. Nb? Day-sitting in night roost. At 11:30 Brownie was discovered sitting silently on his roost in the dormitory tree. However, after i spoke to him, he began a long