Himalayan bluetail 
(Tarsiger rufilatus), also called the Himalayan red-flanked bush-robin or orange-flanked bush-robin

The Himalayan bluetail (Tarsiger rufilatus) is a small passerine bird of the Old World flycatcher family of Muscicapidae. 

The genus name is from Ancient Greek tarsos, "flat of the foot" and Latin gerere, "to carry".
rufilatus Latin rufus red; latus flank, side.