Cogswell 1949 Journal 33 Apr. 24. Arroyo Mocho (SE of Livermore) to Mt. Hamilton, Ala. meda & Santa Clara Co., Calif. Drove via Walnut Creek to Alamo [where we stopped for 5 min. to note birds along the creek bed: Calif. Quail - 8; Wood Pewee - 1; Cedar Waxwing - 15; Yellow Warbler, song heard; Cowbird - 2; Black-headed Grosbeak - {dead on road; Scrub Jay - 1; and House Finch, Green-backed Goldfinch, several each] and thence to Dublin & Livermore, where we followed Audubon Field Trip Group to point in Arroyo Mocho "wash" about arriving there about 9:30 A.M. 4 mi. SE of town. The most birds seen all day were in this area of scattered Sycamores & Blue Oaks with much 1 ft. high grass between. The stream is drying to a slow trickle, but attracts several of the warblers, and my son Denis & another boy found several turtles (Clemmys maximata) in it, one of which, about 3" long, we brought home. At least 5 Thamnophis sp. were also found in brief stops at several points along 1/2 mi. or so of stream bed. Many Citellus beecheyi were out in other holes were maximata the grassy areas, especially along the old Terrace back a ways from stream bed. Many areas about 15 x 30' or so were cropped to about 1/2 height of rest of grass - forming conspicuous depressions upon careful observation. I wonder whether there are due to the squirrels? We covered the "wash" area until 11:30 and then started up the long dirt road to Mt. Hamilton, stopping for lunch at 8.70 mi. marker (from junction of Mines & Tesla Rd.).