California condor Eben Mcmillan 25 October 1963 they did not gather into one compact group during the 45 minutes that I watched them, before they left in the direction of Grapevine Canyon. Nevertheless, on three separate instances, I was able to confirm the number of birds in this group to be nine. At no time was it possible to age these birds, although at least four of them were identified to be adults. After circling up out of the above mentioned shallow valley, and gaining considerable altitude, two of the condor broke away from the group and sailed west for about two miles where they halted their soaring flight and commenced circling above farming activities below. Six condor were still circling near the mouth of El Paso Creek, where it breaks out of the mountains. One condor had disappeared. After about twenty minutes of circling. Five of these six condor soared westward and joined the two that were still circling above the farming activities. At 10:40 A.M., another condor came from the east and joined these condor making a total of eight birds that were circling west of me, about two miles, at 10:45 A.M. At 10:45 all eight of the above condor left in a direct line for the mouth of Grapevine Creek and soon passed from sight into the monkey smog that limited visibility to about two miles, with the unaided eye, at lower levels. This visibility was probably doubled with the aid of a twenty power scope. Looking upward towards the mountain tops, visibility was about ten miles with the unaided eye. As was the case with condors under observation in flight, at Glenville, on 10 September 1963, at least six of