
Photo: (c) Jagdish Singh Negi, some rights reserved (CC BY) · CC-BY (May be cropped or resized)
Zoothera dixoni
Habitat
Subtropical or tropical moist montane forests and high-altitude shrubland
Range
Central and eastern Himalayas to south-central and south-western China
The long-tailed thrush is a member of the thrush family found from the central and eastern Himalayas to south-central and south-western China. Its natural habitats are subtropical or tropical moist montane forests and high-altitude shrubland (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.