The species is separated on the basis of phylogenetic studies that suggest that the population diverged from the common ancestor at least 3 million years ago (estimates vary from 3-6 mya).

The alpine thrush (Zoothera mollissima in the restricted sense) breeds above the tree line whereas the Himalayan thrush breeds in forested habitats.

[2] A newly discovered Himalayan forest thrush bird was named after the birdman of India, Ornithologist Dr.Salim Ali.

A fruit bat is also named after him "Latidens salimalii" The species name is given in honour of the distinguished Indian ornithologist Sálim Ali.

[2] The tree-dwelling species has shorter legs, tail and wings but a longer bill than its Alpine counterpart, and uses the shorter legs and tails to help it manoeuvre around in the forest.