(436) my interference, so I stopped. To see if her annoyance persisted, I sat under the tree on the ground and displayed worms. After one effort to give the nest form by pressing her breast against it on the inside (Although there is really no inside yet), she came down friendly enough. Part of this time Greenie was helping. A few minutes afterwards I went to the glade and both thrashers came as usual; so there were evidently no hard feelings. The return- ed to the nest again. (Temp. 75) If this activity of theirs is merely a reflex expression of an instinctive carrying out of a preordained pattern, then human beings are fortunate in that they have no pattern to follow which in- volves involuntary dragging of huge logs up into the tops of tall trees without assistance. Testing my memory of pitch. 1:15. I made another test of my recollection of Greenie's peer call of yesterday. This time I was a half-tone sharp. 1:20. I tried it again and found that I hit C3 "right square in the middle". (See note Sept. 20, 1934) B "thinking" This is regular pattern. 1:35. Brownie is "thinking" in the nest. 3:45. No observations in between. Brownie is doing some more thinking in the nest which is now a wide, loose platform. Perhaps she is wondering how soon the rains will come. These notes show that in bona fide nest building, "thinking" is an indispensable part of the procedure. On such occasions the bird is silent and looks down upon one with great complacency. A pat response. 6:20. Mr. Brighton Cain (?) and Mr. Hopkins were here about 4:30. I showed them the thrasher nest; no birds were there. We went to the glade; the thrashers did not come for a long time. Finally they appeared, somewhat shy, more especially Greenie, though Brownie jumped to my hand to eat worms and, incidentally, caught a fly while there just as I said to her: "Catch that fly". She jumped on Mr. Hopkins' foot when I held a worm by his knee, but would not