R.E.Johnson 1967 Plain Titmouse March 3 Tilden Regional Park, Alameda Co., Calif. Partly cloudy, breeze, sunny off on. 11:45 AM. Watched a titmouse for 15 min. From underside of 30ft Coast Live Oak in which it foraged. It hopped along larger (up to 8 inch diam) limbs of interior of tree pecking, stabbing, & hunting deliberately & at slow rate. Whips bill often. Moved to exterior leaf layer of tree briefly, then back to interior. One hung upside down on end of branch. Quiet during whole period. Later one gives song of chidcader type. (Earlier in day several were seen along a creek bottom low in willows (5-10ft) in coyote brush hills.) March 4 Strawberry Canyon, Alameda Co., Calif. Sunny, warm, south facing oak-grassland slope. Again observed foraging in interior of tree as much as in leaves to exterior. Variety of notes (really note sequences) heard. Usually a hoarse (though often faint) note precedes or follows other notes.