
Photo: Jagdish Singh Negi · CC BY 4.0 (May be cropped or resized)
Parus monticolus
Habitat
Boreal and temperate forest, and subtropical or tropical moist lowland forest
Range
Bangladesh, Bhutan, China, India, Laos, Myanmar, Nepal, Pakistan, Taiwan and Vietnam
The green-backed tit is a member of the tit family found in Bangladesh, Bhutan, China, India, Laos, Myanmar, Nepal, Pakistan, Taiwan and Vietnam. Its natural habitats are boreal forest, temperate forest, and subtropical or tropical moist lowland forest (Wikipedia, general species account).
That short account is the only source read for the Bhutan guide. No plumage, size, diet or breeding information was found, so none is stated, and the entry is kept as short as the evidence allows.