
Photo: Cheongweei Gan · CC BY 4.0 (May be cropped or resized)
Heterophasia picaoides
Habitat
Evergreen forest, oak and pine forests, secondary growth, scrub with large trees and forest edge
Range
The Himalayas through South East Asia and Sumatra
The long-tailed sibia is a member of the family Leiothrichidae from Southeast Asia, found from the Himalayas through Southeast Asia and Sumatra. It once sat in the family Timaliidae and is sometimes treated as the only species in the genus Heterophasia, with the other sibias placed in Malacias (Wikipedia, general species account).
It is found in evergreen forest, oak and pine forests, secondary growth, scrub with large trees and forest edge habitats. The source read does not name Bhutan, and gives no plumage, size, diet or breeding information, so none is stated.