the periphery, but by spreading out the loose mass from the inside with bill and breast. By doing this, they have, at the moment, made it almost into a ring (Toroid, annulus). That is, it has almost no bottom. 9:00. Greenie was sitting quietly in the nest, Brownie in the act of coming down. She found a suitable twig on the ground (one that I had placed there) and ran quickly up the tree, following a route which she has now standardized. This follows a sloping, main branch and just under the nest makes a helical turn once around the branch, then through a light barrier of leaves to the nest. Even this obstacle is difficult to penetrate. There is no unobstructed route. B placed the twig beside G and G left, B remaining to dispose it prop- erly. 9:27. At 9:15 I went to the nest. G sitting in it. The preceding action was repeated. They are working rapidly now, but have great difficulty in getting material to the nest unless it is very small. Much of it is dropped or abandoned. Both took time off to get worms from me. They are very quiet, but not secretive. Since I was snubbed yesterday I have contented myself by gathering twigs for them and placing them at the foot of the tree. These they use. In attempting to carry one of them by the standard route, Brownie saw that it could not be done. It was a twig with many branches. Accordingly she tried another route, approaching from above, and had almost succeeded when it caught, and in her efforts to dislodge it, she slipped and fell almost to the ground before recovering. The multiplicity of twigs and small branches prevented her using her wings effectively, thus causing her to drop further than she would otherwise have done. The work being done at present is exhausting and the birds rest frequently. At 1:30 no birds were at the nest. I went to the glade without calling and Brownie came running and flying to get worms. After 3