Howell, T.R. 1946 Journal Nov.24; Las Trampas Creek, St. Mary's College, Contra Costa Co., Calif. (cont'd.) abundant. The vireos responded aggressively to imitation of their notes. At 10:45 a Red-tailed Hawk soared overhead. In the bushes under the oaks wren- tits could be heard, and they gradually worked out into the open in response to imitations of their call notes. As soon as the call imitation ceased they disappeared back into the shrubbery. In the thicker, shady deciduous woods Varied Thrushes were found feeding on berries of some sort. Other thrushes (hermit) and Bewick's Wrens als appeared in this type of habitat. A gray adult marsh hawk soared over the hills at high altitude. T