The white-throated needletail (Hirundapus caudacutus), also known as needle-tailed swift or spine-tailed swift, is a large swift in the genus Hirundapus.
White-throated needletails are large swifts with a robust, barrel-like body. They measure about 20 cm and weigh between 110 and 120 grams. They are greyish-brown except for a white throat and a white patch, extending from the base of the tail to the flanks.
It is reputed to reach speeds of up to 170 km/h (105 mph) in horizontal flight, but this is unverified because the methods used to measure its speed have not been published.
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