The Uniform swiftlet (Aerodramus vanikorensis), also known as the Vanikoro or lowland swiftlet, is a species of gregarious, medium-sized swiftlet with a shallowly forked tail. The coloring is dark grey-brown, darker on the upperparts with somewhat paler underparts, especially on chin and throat. This species is widespread from the Philippines through Wallacea, New Guinea and Melanesia. It forages for flying insects primarily in lowland forests and open areas. It nests in caves where it uses its sense of echolocation, rare in birds, to navigate.