These migrating birds can be seen across all but the southeastern portion of North America. The barn swallow builds nests of mud on beams in barns and other open structures. They also build nests on supports beneath bridges. The cliff swallow is between five and six inches in length, has a chestnut colored throat, light underside, buff colored rump, and a white band above the beak. This swallow, like the others, flies to South America for the winter and returns in the spring to all but the southeastern portion of North America.
Cliff swallows make their nests out of mud primarily beneath the edges of barn roofs.
Bank swallows are a smaller variety, measuring between four and one half to five and one half inches in length. This variety of swallow has a brown backside, a white underside, and a brown band across its breast. The Bank swallow, as its name implies, is found living in nest burrows at the sides of steep river banks and sand quarries. This particular species of swallow can be found across all of North America. The Tree swallow is a slender bird that is typically between five and six inches in length.