Explanation:

 • Scientists have described a new species of bird in northern India and China, called the Himalayan forest thrush. The species was distinguished by its musical song.
• This species is not new to the bird kingdom. It is quiet similar to the plain - backed thrush, and known by the same name till now differentiated by its musical song. Now, Plain - backed thrush is renamed to Alphine thrush. So, Plain - backed thrush have two categories one is Himalayan forest thrush and other one is Alphine thrush.
• The alpine thrush (Zoothera mollissima) breeds above the tree line whereas the Himalayan forest thrush breeds in forested habitats.
• Alphin thrush has a much harsher, scratchier, unmusical song.
• Chinese sub-species of the Himalayan Forest Thrush and named as the Sichuan Forest Thrush. This bird’s song was found to be even more musical than that of the Himalayan Forest Thrush.
• The Himalayan forest thrush is only the fourth species of bird discovered in India since independence in 1947.
• This new thrush species have given the scientific name Zoothera salimalii in honour of the late Indian ornithologist Dr Salim Ali.
• In IUCN list it is considered as least concern species.