Mayhew 1947 Journal 10. May 23 U.C. campus, Alameda Co., Calif. I spent from 5:30 A.M. to 9:30 A.M. watching a Robin's nest just south of LSB. The weather was cool & the sky was completely overcast when I began my observations. At 7:10 A.M. the sun broke through the overcast, & from then on the weather warmed up considerably. Other species that came into view while I was observing were: Swainson's Thrush, Brown Towhee, Spotted Towhee, Purple Finch, Cliff Swallow, Bush-tit, Lawrence Goldfinch, Brewer's Blackbird, & Song Sparrow. May 28 I spent from 2:45 P.M. to 5:15 P.M. making observations on the nest in the Cedrus deodara tree south of Hilgard Hall. The weather was clear & warm, with almost no trace of a wind. The only other birds seen while watching the nest were: Brown Towhee, Bush-tit, Song Sparrow & Brewer's Blackbird. May 30 Crows Landing Highway, 9 miles south of Modesto, Stanislaus Co., Calif. I started a trip from this point at 9 A.M. and travelled to Leland Creek, Tuolumne county, Calif. On this trip I went from Lower Sonoran to Transition zones, Leland Creek being about 6000 feet high on the west slope of the Sierras. On this trip I saw in the Lower Sonoran zone: in open country, Western Mourning Dove, Cliff Swallow, Barn Swallow, Meadowlark, Black-necked Stilt, Bullock's Oriole, English Sparrow, House Finch, Western Kingbird, Brewer's Blackbird,