A plain brown bird, the Northern Rough-winged Swallow is fairly common across the United States in summer. The species derives its name from the outer wing feathers, which have small hooks or points on their leading edges. Find Out More

Handsome aerialists with deep-blue iridescent backs and clean white fronts, Tree Swallows are a familiar sight in summer fields and wetlands across northern North America. They chase after flying insects with acrobatic twists and turns, their steely blue-green feathers flashing in the sunlight. Tree Swallows nest in tree cavities; they also readily take up residence [...]