Robinson and Kloss, 1919,
Langbian Peaks [c. 12°02’ N 108°26’ E], Annam, Vietnam.
HBW treated R. naungmungensis as a subspecies of present species, and this arrangement remains plausible, despite subsequent publications in support of species status#R#R. In Vietnam, birds in NE Tonkin (with stronger black malar area and bold black-and-white feathering on belly) represent an as yet undescribed race, and those in Central Highlands of S part of C Annam (with brown of plumage colder and darker, rufous areas duller and paler, underparts and bill roughly intermediate between those of other races) another such. Two subspecies currently recognized.
Food and feeding
Status and conservation
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