Subspecies
Taxonomic status of this species and Pale-chinned Flycatcher (Cyornis poliogenys) uncertain. The two hybridize extensively in eastern India (Eastern Ghats), and subspecies vernayi of Pale-chinned Flycatcher (Cyornis poliogenys) recently considered to be the result of such interbreeding. A detailed review of both forms required. There is some evidence of hybridization with Hill Blue-Flycatcher (Cyornis banyumas) in Malay Peninsula. Subspecies jerdoni differs significantly from others in plumage and voice and may merit the rank of full species.
The following 5 subspecies are recognised:
tickelliae Blyth, 1843 - Southern Nepal, north, central and southern India and Myanmar (except south).
jerdoni Holdsworth, 1872 - Sri Lanka.
indochina Chasen and Kloss, 1928 - South-eastern Myanmar, Thailand (except peninsula), Cambodia, SLaos and central Vietnam (central and southern Annam).
sumatrensis (Sharpe, 1879) - Southern Thailand and Peninsular Malaysia, also north-eastern Sumatra (one record).
lamprus Oberholser, 1917 - Anamba Is, off eastern Peninsular Malaysia.