Cave Swiftlet

It is a woodland species that nests in caves, and is shiny blackish-brown above with a greenish gloss, including the rump. The Bornean swiftlet was considered a subspecies but is now usually considered distinct (Wikipedia, general species account). The cave swiftlet or linchi swiftlet (Collocalia linchi) belongs to swift in the family Apodidae. It is a woodland species and nests in caves. The Bornean swiftlet was considered a subspecies. (Wikipedia, general species account).

The cave swiftlet, or linchi swiftlet, is a swift found on the Indonesian islands of Sumatra, Java and Bali. It is found on the Indonesia islands of Sumatra, Java and Bali. Tail black, rounded with shallow notch but lacking the white specks found in the very similar glossy swiftlet (Collocalia esculenta). Its recorded distribution includes the Sundaic region, in Java, Madura Island, Bawean, Kangean Island, Nusa Penida, Bali and Lombok, parts of Sumatra, and the western slopes of Mount Kinabalu on Sabah, Borneo. (Wikipedia, general species account).