General Information
- Short bill
- Gray crest
- Dark forehead
- Pale gray upperparts
- White underparts
- Rusty flanks
- Sexes similar
- Often found in small flocks

Birds from central and southern Texas (formerly a separate species, Black-crested Titmouse) have black crests and pale foreheads.

Similar species
The Tufted Titmouse is similar to the Plain Titmouse but has rusty flanks and a black forehead (or crest).