Silver-rumped spinetail

Silver-rumped spinetail
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Clade: Strisores
Order: Apodiformes
Family: Apodidae
Genus: Rhaphidura
Species:
R. leucopygialis
Binomial name
Rhaphidura leucopygialis
(Blyth, 1849)

The silver-rumped spinetail or silver-rumped needletail (Rhaphidura leucopygialis, sometimes spelled Raphidura leucopygialis) is a species of swift in the family Apodidae. It is found in Brunei, Indonesia, Malaysia, Myanmar, Singapore, and Thailand. Its natural habitat is subtropical or tropical moist lowland forests. Research on the silver- Rumped spine tail has utilized facultative heterothermy, or even torpor, as a physiological mechanism to reduce its metabolic rate and conserve energy in its tropical environment.