
Photo: Kudaibergen Amirekul · CC BY-SA 4.0 (May be cropped or resized)
Turdus atrogularis
Habitat
Nest usually within 1.5–2m of the ground, sometimes on the ground
The black-throated thrush usually places its nest within 1.5 to 2m of the ground, sometimes on the ground (Wikipedia, general species account).
That single sentence is all the source read for the Bhutan guide gives. No plumage, size, range, diet or clutch information was found, so none is stated, and its occurrence in Bhutan is flagged for checking.