A large swift with long, curved, and pointed wings. The tail is slightly notched, but often appears square. It has a tiny, almost invisible bill and very small feet.
Relative Size
Larger than a Vaux's Swift, slightly smaller than a Purple Martin.
![Relative Size](/guide/images/size/scale.png)
![between sparrow and robin](/guide/images/size/btwn-sparrow-robin.png)
Measurements- Both Sexes
- Length: 7.1-7.2 in (18-18.4 cm)
- Weight: 1.4-1.9 oz (40-55 g)
- Length: 7.1-7.2 in (18-18.4 cm)
- Weight: 1.4-1.9 oz (40-55 g)