caroline islands swiftlet Aerodramus inquietus

Brownish swiftlet with a shallowly forked tail, restricted to the Chuuk Islands, Pohnpei, and Kosrae, in the Caroline Islands. The only swift in Micronesia; only possible confusion species is Barn Swallow, which is paler below and has a much more deeply forked tail. Flies over all kinds of habitats in agile and twisting flight. Nests in caves.