Oak Titmice males sing several songs, all involving sharp, robust notes, both high and low, in repeated sequences with a steady tempo. Males sing infrequently in the nonbreeding season, singing more and more as spring approaches. Females are capable of singing but do so only rarely.
Males and females are highly vocal, chattering from elevated perches mostly to defend territories from other Oak Titmice. These calls include both high- and low-pitched notes, some shrill and some scratchy. Oak Titmice also make lisping notes during foraging, hissing and puffing sounds to defend the nest, twittering during courtship, and shrill notes when flushed from a roost.