McClellan Ranch Preserve, Santa Clara, California, USA The oak titmouse (Baeolophus inornatus) is a passerine bird in the tit family Paridae.

This species lives year-round on the Pacific slope, resident from southern Oregon south through California west of the Sierra Nevada to Baja California, but its range surrounds the central San Joaquin Valley.

Oak titmice are attracted to feeders with suet, peanut butter and sunflower seeds.

It breeds from March into July, with peak activity in April and May, laying 3–9 eggs, usually 6–8.

The tufted titmouse, which does not overlap in range, has a whiter belly, rusty flanks, and black on the forehead.