1966 Bill Arvey - Journal July 16 - Got up at 3:30 AM in Orinda, ate, then started to Sagen Creek, Nevada Co., Calif. Arrived at 7:30 AM. Stopped to talk to Dr. Leopold who had just gotten up, at his tent frame. The purpose of the trip is to try to determine whether or not Vaux Swifts are nesting in the Sagen Creek area. Gene Christensen shot about 4 in June and found enlarged gonads, ruptured follicles, enlarged salivaryp which is evidence that breeding does occur here, but definite data should be attained. Nothing was flying over Kilu meadow, so James Lynch and I hike up the stream towards Carpenter Ridge for a mile or two. Above Kilu meadow are some aspens and alders growing along the creek. Beaver work continues as far up as we went. At one spot, amidst a streamside thicket of alder, aspen, fir, and pines we squeaked in its following, 2 MacIllivray Warblers, 2 Wilson warblers, a yellow warbler, 2 Nashville warblers and 2 Humit warblers. No young were noticed among them. Others such as junco's all seemed to have fledged, or near fledged young with them. 3 groups of Mountain quail were seen up farther in Brush - Pine hillside. One group had young flightless chicks which became separate from the parents. We captured one such by