California condor Eben McMillan 19 October 1963 characteristic that makes it appear quite different in flight than an adult bird. Just what this characteristic is I cannot define although it is very noticeable when both adults and young are flying together. This young condor circled briefly before disappearing into a fog cloud out of which it did not emerge, so that we could find out which it left the area. In that this bird was about as far behind the adults as was the young bird that left after all the other condors had gone from the canyon behind the Farmworth homes south of Glenville, when Ian and I were observing condors there, it would tend to make me think this young bird knew what direction the adults were leaving and it would follow the same route. The Santa Yana river passes through a very narrow defile of rock about one half mile below where we saw these condors. About one quarter mile up river from this defile and on the East face of the canyon wall just above the water is a bold face about three hundred feet high of sandstone on the face of which at three different places splatches of white bird excrement could be seen. This is near the old Carden nest site. The excrement appears to be in places where condor could boost. From the looks of the terrain it appears these condors left about 10:05 or a few minutes before we saw them, and flying down down canyon, a bit, and then crossing to the west side of the canyon, could fly along an upslope that continued on up the mountainside and came out on the ridge where we saw them circling. We could make out no sign of a nest-site- continuing on down the trail he came to a campsite