visual acuity without competing with the brain for space inside of the head. The morphology of the eye in swallows is similar to that of a raptor.

Like the unrelated swifts and nightjars, which hunt in a similar way, they have short bills, but strong jaws and a wide gape. Their body lengths range from about 10 - 24 cm and their weight from about 10 - 60 g. The smallest species by weight may be the Fanti sawwing, at a mean