The Silver-rumped Spinetail is a small swift of Southeast Asian forests and their surroundings. Its dark body and silvery-white rump stand out, and it catches insects in flight.
It is dark with a silvery-white rump, very broad paddle-shaped wings and a short, square-cut tail with protruding spines.
It catches insects in flight. Groups have been recorded roosting at night in large tree hollows.
Juveniles are less glossy than adults and have shorter uppertail coverts that do not reach the tail tip.
An extinction-risk assessment has not been added yet.