
Photo: gancw1 · CC BY (May be cropped or resized)
Ficedula westermanni
Habitat
Subtropical or tropical moist lowland and moist montane forest
Range
The Himalayas and Southeast Asia
The little pied flycatcher is a member of the Old World flycatcher family native to the Himalayas and Southeast Asia. Its natural habitats are subtropical or tropical moist lowland forest and 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.