Warbling Vireos are small, chunky songbirds with thick, straight, slightly hooked bills. They are medium-sized for vireos, with a fairly round head and medium-length bill and tail.
Slightly larger than a Black-capped Chickadee; smaller than a House Finch.sparrow-sized or smaller
- Both Sexes
- Length: 4.7-5.1 in (12-13 cm)
- Weight: 0.3-0.6 oz (10-16 g)
- Wingspan: 8.7 in (22 cm)