On June 14th. it was recorded that Rhody's flight feathers, in the last week had "emerged about 2 inches beyond the clipped coverts", showing, of course, that they were being replaced, and apparently in advance of the moulting season, though I have not checked over back notes. (2) The broken middle tail feather of Archie was dropped long before moult began and completely replaced before the moult. From the foregoing it would appear that a feather, injured only in the rachis, which would seem to be about the least vital part of it, is shed and replaced entirely independently of the moulting period. See note 16-23 Such being the case, it is difficult to see how the feather can be the inert, lifeless appendage which it is supposed to be when full-grown, unconnected with the vital processes of the bird itself. Curvature of B's bill. 3:30 P.M. For some time I have suspected that the curvature of Brownie's bill did not remain constant, so, just now, I observed it carefully as he sat on my lap digging worms out of the box. When the tip of the bill is definitely closed firmly, the posterior portion, beginning at the gape, is not closed for more than half of the length of the bill, perhaps three-quarters or more. That is the two mandibles have not the same radius of curvature, hence there has been a change in one or both, since hundreds of previous ob- ervations at close range have not disclosed this condition. My attention to this was first attracted by seeing the light through the opening a few days ago. October 3rd. No change amongst the thrashers. Archie took the hanging nest as a roost for the night--the first time noted. Neither A nor T were interested in eating mice during the day, although willing to play with them. October 4th. 12:35 P.M. Brownie was fussing with twigs in the dormitory tree for the first time noted since the last nest was built. He also called Nova from there. October 5th. to 14th., incl. During this period Brownie was not again observed to work with twigs at the dorm, although on the 13th. after getting worms from me, he gathered up a sheaf of soap-root fibres, but dropped them soon after. Singing continues about as usual from several directions. Brownie wanders off to considerable distances in accordance with habit at this time of year, but always spends most of his time here, including roosting in the dorm. Hawk raids are beginning again.