(445) a few worms each, both began collecting soap-root fibre, selecting single strands, and ran off to the nest. These soap-root fibres eventually become scattered over a wide area and often are partially embedded in the hard ground singly, from which they project like course hairs. The thrashers pull them out, unless the earth is too so hard. Some of them are strong that the birds can not break even a single strand. Hole in nest. The nest still has a hole through the bottom. This is caused by the birds pushing the material towards the edges in order to give the structure a hollow shape. 8:30 A.M. (Temp. 56.Overcast; no wind). Brownie and Greenie came to me for worms in the glade, Brownie on my knee, Greenie on a chair beside me. The policy of non-interference with Greenie's worm supply seems to be accepted by Brownie. After eating they gathered sheaves of fibres for the nest and took them there. Brownie has introduced the tree-toad song in her repertoire. She has been approximating it for some time, but just now while sitting on my knee, produced some excellent imitations: ____' - ____' Creek it Croak it About 1:30 P.M. Mr. Sampson and I watched the thrashers in the glade. Brownie had no hesitation in jumping up to Mr. Sampson's knee to get worms. When she gathered soap-root fibre in front of us, I experimented to see which impulse was the stronger at the moment: nest-building or worm-eating. The worms won three times out of three. Once she merely dropped the fibre and came for the worm; once she threw it away with a side flick of her head and once she brought it with her and dropped it at my feet. In contest between her and a wren to see who would get the worm first, the wren having a very liberal handicap of a couple of yards, the wren won by about 2 feet and went