The Violet-green Swallow is a small, graceful swallow that breeds widely across Arizona, particularly in the higher elevations of the state. Recognized by its shimmering green back, violet rump, and contrasting white underparts that extend onto the sides of the rump, this swallow is both a striking and agile flier. Its long, pointed wings and slightly notched tail allow it to dart and glide effortlessly while foraging for insects midair.
In Arizona, Tachycineta thalassina is most often associated with mountain forests, canyons, and riparian areas, especially in the Sky Islands and along the Mogollon Rim. They arrive in spring to breed, nesting in natural cavities, old woodpecker holes, and sometimes in nest boxes provided by humans. They are often seen in loose colonies, swooping over open meadows and waterways in search of flying insects.
The species is migratory, wintering in Mexico and Central America before returning north each year. During migration, flocks can also be observed in desert lowlands and urban areas, though they primarily seek out higher elevation breeding habitats.
