The Waterfall Swift (Hydrochous gigas) is a species of swift in the Apodidae family. It is monotypic within the genus Hydrochous. It is found in Indonesia and Malaysia. Its natural habitats are subtropical or tropical moist montanes and rivers. It is threatened by habitat loss.
- BirdLife International 2004. Hydrochous gigas. 2006 IUCN Red List of Threatened Species. Downloaded on 24 July 2007.
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