weed--all in a dried-up state. The idea in including so little of the weed was to force him to search it out from the rest of the litter in case he really preferred it, as I have supposed. I also added some of the fresh green spring growth of the same weed to see what he would do about it. In appearance it, of course, differs radically from the dried plant. Both, however, are slightly aromatic. He would look at none of the material except the weed in its two states. The green (but slightly wilted) weed interested him to the extent that he picked up a piece or two and "killed" it by slapping it upon the ground; but he did not take it up to the nest. The old dead stalks--with and without curled-up leaves attached--were all he would use in his structure at this time, although he has been seen, rarely, to use the green weed sparingly. (There is a suggestion here that odor may play some part in his selection of material). Later in the day he was seen to take up a huge tuft of matted and partly decomposed vegetable fibre--almost leaf-mould, and still later a slab of thick, growing, green moss that looked as if it had been stripped--roots and all--from some flat surface. Mar. 6th. A rainy day, but early song by Neo, who worked at the nest notwithstanding and also sat silently in it for long periods at a time without stirring. He is lining it, and N2 has not actually been seen today helping. Neo's curved bill, by being pressed against the inside around the circumference, is a good shaping tool. Brownie also used his bill in this manner. He is no longer lame. Rhody was not seen to work at all. He carried one mouse for 4 hours, mostly outside the north fence out of the S.E. wind. Most of the time he merely sat still holding it and looking and listening. The only shelter he was seen to take was underneath a certain pine tree, where he would occasionally shake his feathers. Mar. 7th. Looks like another rainy day. At 9 A.M. Neo was still lining his nest. It looks almost complete. Neo was on hand, but after watching 10 minutes, was not seen to help. It began to rain again not long after, but Neo continued on the job. At 11 o'clock a long search for Rhody disclosed him sitting quite placidly under his shelter beneath the old oak, which I had thought he had forgotten all about. He cried and I got him a mouse which he honored with ritual, but he stayed under his roof. A half hour later he had gone; but at 2:30 he was again in the same place and again cried for a mouse, following me to the tool-house for it. This was unexpected as he had, sometime before 11, eaten a large piece of meat in the cage. This second mouse received full honors and, an hour later, I found him with it in his old house in the roost-tree. Instead of crying, he coot-cooted on seeing me and began to step in and out of the house, "Look and Listen". Finally he sailed down to the street only to return to the house by climbing up the tree itself instead of going up via the ladder tree as is usual. In and out again several times, and I decided to leave him to his own devices. It will be observed here that he sought the roost tree not because of the weather (the sun was now out) nor to retire for the day, but in pursuance of his search for a mate.