Metallic blue-black on top and light to dark grey on its breast and belly. Its forehead, throat and upper breast are rust in colour. It has grey legs and feet, and its eyes and bill are black. A young Welcome Swallow has shorter tail feathers than an adult and its forehead and throat are a creamy beige (instead of rust).

Distinctive feature

A deeply forked tail with a white band or row of spots on the long tail feathers.