Jan. 3, 4. Thile fogs in Berkeley. Spring song of Vagón's Wren and Thrasher as well as Wren-tit, and Titmouse. Jan. 5. Heavy thile fog. As we were driving to Boulder Creek we decided to go through the new low-level Tunnel and down through the San Ramon Valley but found the fog still more dense there. It was not until we were half way up the Saratoga Grade that we drove out into clear sunshine. Weather at San Boulder Creek was beautiful; air very clear, air very warm, frost at night. Jan. 6. Boulder Creek. Birds much more abundant than at any time this winter - robins, Horned Thrushes, Varied Thrushes; great flocks of Siskiyou and juncos and Chickadees. Many Towhees and Warblers. One Kingfisher heard. Jan. 7. Birds haven't made an impression on the madrone berries yet though some years they are all eaten by Dec. 15. Worked in the garden in the morning, transplanting seedlings - After lunch we slept in the sunshine for an hour (yesterday also) then started to Berkeley. When we got to Saratoga Gap we could see the whole valley filled with a high fog, more rain tops only were clear. So we drove home via the Skyline Blvd and Bay Bridge. Distance the same as via Santa Clara, and time 2 3/4 hrs. Cold in Berkeley with ground fog. During the night the least wind began to blow.