Iridoprocne bicolor, also known as the white-throated needletail, is a bird species that belongs to the swift family. It is a fast and agile flyer known for its impressive aerial acrobatics. The bird has a distinctive white throat and underparts that contrast with its dark upper plumage. Its scientific name contains two words, "iridoprocne" and "bicolor", which are both Greek in origin. The former refers to the rainbow-like iridescence of the bird's plumage, while the latter simply refers to its two-colored appearance. Other synonyms for Iridoprocne bicolor include needle-tailed swift, spine-tailed swift, Himalayan needletail, and white-throated spinetail.