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Photo: Lip Kee · CC BY-SA 2.0 (May be cropped or resized)
Collocalia linchi
Habitat
Woodland; nests in caves
Range
Sumatra, Java and Bali
The cave swiftlet, or linchi swiftlet, is a swift found on the Indonesian islands of Sumatra, Java and Bali. 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).