(443) All Cooper and Sharp-shins that I have examined here have four bands, and this has puzzled me in view of the description cited. So I shall take it out to the Museum of Vertebrate Zoology at Berkeley for identification. I took the hawk and held it in my hand about 8 feet from the thrasher nest--Brownie on duty. She kept perfectly still. I placed it on the ground, held a worm over it and called. B came out of the nest and peered down as if to fly to me, but instead began to call quillick very softly and moved about in the tree looking down, first from one side of a branch and then the other, repeating the call. I moved ten feet to one side of the hawk and continued to offer worms. B moved over to a position above my head, still calling the same quillick, but looking at me instead of the hawk. However, she would not come, but went off to the glade. 12:15. At the University Miss Wythe very kindly made a careful comparison of the hawk with skins on file and the bird was identified as an immature Cooper. Incidentally most of the skins of Cooper and Sharp-shins examined showed four bands. 12:50. A fairly strong breeze from the north is sweeping over the crest of the spur, giving a foretaste of how untenable the nest still be in really inclement weather. As it is, most birds, including both thrashers have gone to the south side of the ridge. I left the latter birds in the glade sunning and generally enjoying them- selves. Greenie sang a few snatches of almost full song from the ground--an unusual occurrence. He is using also for conversational purposes the phrase which sounds so much like the Slender-billed Nuthatch. The temperature has dropped from 78, this mornings maxi- mum, to 68. 3:25. Up to this time the thrashers have not been seen at the nest. Brownie is in it now, seemingly giving it a trial to see how it feels in a strong wind. Greenie has gone back to sub-singing