Eurasian and African members of this family are referred to as "tits", while North American species are called either "chickadees" (onomatopoeic, derived from their distinctive "chick-a dee dee dee" alarm call) or "titmice". These birds are mainly small, stocky, woodland species with short, stout bills. Many species live around human habitation and come readily to bird feeders for nuts or seed, and learn to take other foods.
The penduline-tits are a family of small passerine birds related to the true tits. One species has been recorded in Nevada, the Verdin.
Bushtits are active birds with long tails compared to their size, moving almost constantly while they forage for insects in shrubs and trees.