(424) wasting any time. For the last ten minutes or so neither bird paid any attention to me whatever. As I left I looked up into Greenie's tree and he was snugly stowed away. Greenie's Roost 10:33 P.M. Outside air temp. 61. It took exactly 18 minutes (I.e. 18 minutes search in one tree): to locate Greenie in his little oak tree. The tree is only about 10 or 12 feet high with about the same spread, but the canopy is dense and he is well tucked away in it. I am satisfied now that he has been in it on previous occasions when I was unable to find him. Brownie was on her usual perch--that is, on a certain definite twig. Any twig will not do. It appears that it should be of the correct diameter to fit their feet properly; must be practically horizontal, say 8 to 10 feet up. Neither too close to the ground, nor too high. Evidently they like a screen overhead and below both. They also need quite a little space free of interfering twigs. They are very impatient of twigs or leaves too close to their heads and try to break them off. They are not so particular about their tails and will tolerate their being bent almost at right angles sidewise by some obstacle for minutes at a time. I am rather surprised at their choice of roosting places. Both trees are right on the edge of the road and on top of the ridge, though there is some shelter from winds afforded by other trees and buildings. The birds do not stir when I turn a flash-light on them. Their under parts seen thus are just the color of dry leaves Sept.28th. 8:15. At 8:05 I went directly to Dorm. A.(Brownie's tree) Both thrashers were in it, Brownie at the nest. Both came down for worms. There is no evident progress on the nest. I still doubt if it is a serious effort. There was no loud singing heard here earlier in the morning; also the birds were very solemn when they came to me. Air temp. 62. (All these temperatures are taken under an oak. The sun never touches the thermometer).