(101) some often stimulated to perform an act differing from whatever they were doing before feeding . I now wanted to see whether the building urge was strong enough to make them begin a new nest if fed, or, at any rate show more marked signs of it than Brown-eyes exhibited an hour ago by picking up and dropping twigs. Brown-eyes was 25 feet away still preening . Crouched on the ground on the east side of the glade under a small oak; a place where I have never fed them before. Brown-eyes came running to me shortly, but before reaching me, stopped and picked up a long twig about four feet away and began to talk. She then looked up into the tree and began climbing up through the branches with the twig until she got up about nine feet which is near the top of this particular tree. and where the twiggy growth begins to thicken. She looked for a place to put the twig and finally placed it in a crotch, practically over my head. In what I would call a poor place for a nest, She was then joined by Green-eyes and they talked it over, then dropped down to the ground near me and ran off. I do not believe a nesting site is selected in this casual way, therefore I do not think they will build there. The twig placed there in my presence was the only one and I believe it never would have been put in that tree if I had not called Brown-eyes over. The combination of twig, brushytree, me with the grub all coming at the "psychological moment" when the desire for nest building was strong, was too much for her so she immediately put "any" twig in "any" tree. April 26 At 8 A.M. both birds were busy preening themselves; after having had soaking baths somewhere; while friendly, they did not come to feed as their toilets needed immed-