of the dormitory tree, the other remained perched high up on a dead branch talking and breaking into full song at times. This , I think was Greenie, but can not be absolutely certain. Which ever it was seemed to keep posted as to the other's whereabouts. Finally they got together on the road and began exploring about the tool house and shop--places seldom visited by either of them--except when expecting to find me there with food. Brownie, after I had succeeded in getting their identities straightened out (by having her come to me for a worm,) tried to pull up a soap-root that was project- ing from a hard path. Failing in this, she hooked her bill under the wooden cover over a tile(sunk in the ground for the purpose of of getting water down to the roots of an oak) and peered down into the hole ( 4 inches diameter by three feet deep) curiously. Both then jointly explored this relatively unfamiliar territory. I had not enticed them into it; the reverse was the case. By this time it was 8:48 plus or minus, and I left them still absorbed in their own affairs. Much of the foregoing is new behavior and, it will be noted, represents more or less a cooperative action. It is pleasing to see their sustained interest in each other, and this characteristic of theirs naturally suggests that these birds may mate for life. At any rate, they have been together for a known and 4 nests period of 51 weeks to date; how much longer I do not know. A very entertaining pair--always doing something new. 10:20. I neglected to record that, at 12 feet distance, † new undertones and interpolations between louder phrases were heard in the full song that I have not heard before even at 25 feet. This does not necessarily imply that this a fixed characteristic of all thrasher music, for as frequently noted, the song seems never some twice the same, though always containing phrases previously heard. Thus, when the bird was singing from the top of the old oak about 30 feet above me, it introduced many of its short songs with flicker