
Photo: (c) Rejoice Gassah, some rights reserved (CC BY) · CC-BY (May be cropped or resized)
Staphida castaniceps
Habitat
Subtropical or tropical moist lowland and moist montane forests
Range
The Himalayas to north-western Thailand
The striated yuhina is a member of the white-eye family found from the Himalayas to north-western Thailand. Its natural habitats are subtropical or tropical moist lowland forests and moist montane forests (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.