Weston 1946 Aimophila ruficeps 1. Jan. 26, 1946 - Las Trampas Ridge, Contra Costa Co., California 11:12 a.m. while walking on open North east facing slope I hear several single call notes, then several "deer-deer" deer" calls. Investigation showed one Rufous-crowned sparrow present. Is in a rather unusual place. Nearest form of bushy cover is a lone live oak 300 ft away. Next cover is another live oak 500 ft away. The bird is in 6 to 8" tall green and dead grass). A concentration, 150' in [illegible] diameter, of dead 12" high ferns grows there. The sparrow is remaining in the ferns which offer a little some protection. Walking up to it makes it fly 50 ft or so before dropping back into the ferns and grass. Dr. Miller once walks up to within 10± ft before it flies. It then flies off 500 ft to another small concentration of ferns and grass. The rest of the open hillside is covered with grass only. At 11:30 a.m. we worked into a stand of chamise. There we saw California jays, brown towhees and several dell sparrows. From the chamise we work back down into the canyon to the car. Near the car we see downey and Nuttall woodpeckers and hear a winter wren. These were seen about 12:45 p.m. Back at the car we ate lunch and then left for Berkeley and home. We arrived at Berkeley, at the M.V.Z., at 2:30 p.m.