Rufous-bellied Niltava (Niltava sundara) [XC433559]
by Mike Dooher from Rabdentse, West Sikkim, Sikkim, India (call)
Rufous-bellied Niltava (Niltava sundara) [XC399354]
by Dave Guo from Kechuperi, West Sikkim, Sikkim, India (call, song)
Subspecies
May form a superspecies with Fujian Niltava (Niltava davidi) and Rufous-vented Niltava (Niltava sumatrana) and has previously been considered conspecific with one or both.
The following 3 subspecies are recognised:
whistleri Ticehurst, 1926 - North-western Himalayas of northern Pakistan and northern India.
sundara Hodgson, 1837 - Central and eastern Himalayas and southern China (south-eastern Xizang, western Yunnan) south to Myanmar (except eastern and south-east).
denotata Bangs & Phillips, JC, 1914 - Breeds eastern Myanmar and southern China (Shaanxi and western Hubei south to eastern Yunnan, Sichuan and Guizhou). Non-breeding south to northern Thailand and northern Indochina.