ing, but is small and distorted. August 5th. Much early song. 8:45 A.M. Early in the morning thrasher sounds were heard all about the house, and at 7:30 approximately Brownie took position in an oak alongside of the driveway at the west of the house and sang full song beautifully, without moving from that particular tree, until about 8:40. During this period there were two other thrashers, also singing full song, still further to the west down in the canyon, prob- ably several hundred yards away. At least one of them seemed to be singing responsively to B. At 8:40 B decided to go down there and see what it was all about, and I could hear his song gradually get- ting ffarther and farther away . Incidentally, while he was at his original post, an echo could be heard of his song. The nearest object from which the sound could be reflected and which at the same time occupies the proper angular position is a very large one, isolated, formerly belonging to [illegible] Best. As a preliminary guess, its distance is 250 yards. In this case, B's song was audible 500 yards. During the day the two young birds were often at the oval lawn for long periods, Brownie occasionally appearing there at the same time. They all seemed indifferent to each other, although B once ejected Bb from the hole he was digging without chasing him away--an act which he often performed at the expense of Greenie when she was here. Night roosts. At night B occupied his roost in the acacia and Bb his usual one. August 6th. Opening song. B opened the day with full song from the tree near my bedroom window. The phrases, this time, were different, i.e. he specialized on different ones. Also the songs were shorter and spaced farther apart. A distant thrasher was also singing down in the canyon to the west. As before, there seemed to be some coordination between the two territory,both optically and aurally, spread out before him like a