Chimney Swifts are very small birds with slender bodies and very long, narrow, curved wings. They have round heads, short necks, and short, tapered tails. The wide bill is so short that it is hard to see.
About the same size as a Cliff Swallow.between sparrow and robin
- Both Sexes
- Length: 4.7-5.9 in (12-15 cm)
- Weight: 0.6-1.1 oz (17-30 g)
- Wingspan: 10.6-11.8 in (27-30 cm)