The Chilean Swallow is a small swallow with a metallic blue back, white underparts, and a forked tail. It breeds in Chile and moves north for the winter.
Its back has a metallic blue sheen, with dark areas around the eyes and at the wing tips; the rump, belly, neck, and chest are whitish. The forked tail is noticeable in flight. It is about 13–14 cm long.
It breeds in central and southern Chile, nesting under roofs, in wall holes, or in tree cavities. It catches flying insects and is often seen in pairs or groups.
An extinction-risk assessment has not been added yet.