
Photo: Lip Kee (Singapore) · CC BY-SA 2.0 (May be cropped or resized)
Muscicapa ferruginea
Habitat
Subtropical or tropical moist montane forests
Range
Eastern Himalayas, the Purvanchal Range and central/southern China; winters to Hainan and Southeast Asia
The ferruginous flycatcher is a member of the Old World flycatcher family native to the eastern Himalayas, the Purvanchal Range and central and southern China, wintering to Hainan and Southeast Asia. Its natural habitat is subtropical or tropical moist montane forest (Wikipedia, general species account).
That short account is the only source read for the Bhutan guide. It does not name Bhutan specifically, and gives no plumage, size, diet or breeding information, so none is stated.