Yellow Warblers are small, evenly proportioned songbirds with medium-length tails and rounded heads. For a warbler, the straight, thin bill is relatively large.
About the same size as a Yellow-rumped Warbler; slightly larger than an American Goldfinch.sparrow-sized or smaller
- Both Sexes
- Length: 4.7-5.1 in (12-13 cm)
- Weight: 0.3-0.4 oz (9-11 g)
- Wingspan: 6.3-7.9 in (16-20 cm)