E. J. O. Hartert, 1896,
In past 100 years treated as conspecific with C. rufigastra or as a subspecies of C. omissus when this sometimes given species rank, but differs from latter in (in male) its white vs rufous throat (3); bolder black head sides (1); black vs dark blue breast sides (ns); and (in female) dull blue (male-like) upperparts with blue brow-flash vs grey-blue upperparts and no brow-flash (3); and reportedly different voice#R. Race kalaoensis very well marked and perhaps merits species rank on its own; study needed. Two subspecies recognized.
Food and feeding
Status and conservation
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