Carpodacus thura
Habitat
Temperate forests and temperate shrubland
Range
Across the Himalayas from Afghanistan in the west, east across India to Tibet, Bhutan and Nepal
The Himalayan white-browed rosefinch is a true finch ranging across the Himalayas, from Afghanistan in the west, eastwards across India to Tibet, Bhutan and Nepal. Its natural habitats are temperate forests and temperate shrubland (Wikipedia, general species account).
That short account is the only source read for the Bhutan guide. It gives no plumage, size, diet or breeding information, so none is stated.