Usually considered conspecific with D. concolor, but differs in its olive-green vs (greenish-washed) grey neck, back and rump (1); black-scaled grey vs all-grey crown (1); slightly contrasting pale lores vs larger and more contrasting area covering the frons (2); shallower, shorter, less decurved bill (effect size −3.75; score 2); described calls “shorter and drier than in Nilgiri”#R (at least 1)#R. Race virescens also argued as distinct species, but appears to differ from other subspecies in present species only in its greyish-white vs pale yellowish-grey throat and breast and yellow vs pale yellowish-grey belly (2); supposedly different voice#R. Geographical variation generally rather subtle; uchidai could perhaps be included in olivaceum. Other proposed races are inornatum (Nepal) and sinense (foothills of Omei Shan, in Sichuan, S China), both subsumed within olivaceum. Six subspecies currently recognized.
Food and feeding
Status and conservation
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