Himalayan Thrush

The Himalayan thrush, or Himalayan forest thrush, was described in 2016 and separated from the alpine thrush, with which it was formerly lumped; the two differ in song. It breeds from Sikkim and Darjeeling in India and east into Tibet and further east into north-west Yunnan in China (Wikipedia, general species account).

It is a tree-dwelling species with shorter legs, tail and wings but a longer bill than its alpine counterpart, the shorter legs and tail helping it manoeuvre in forest. The alpine thrush breeds above the tree line whereas the Himalayan thrush breeds in forested habitats, and it has a more musical call, while that of the alpine thrush is raspy and grating. The source read does not name Bhutan.