Salangana Culiblanca Aerodramus spodiopygius

A small, mostly gray swiftlet, paler beneath with a pale throat and darker cap. White rump varies from white to pale gray. Occurs over a wide range of habitats up to 1900 meters of elevation. Similar to both Uniform Swiftlet and Mayr’s Swiftlet, but smaller, with a paler rump. Main call is a pleasant twitter, “twee-twee-chew-chew.”