Elgeyo, East Africa.
Until recently considered conspecific with C. reichardi, although split long speculated; differs in its brown-streaked vs plain white chin and upper throat (2); paler, browner and much more extensive streaking below, continuing onto upper belly and flanks (3); marginally more whitish, less blackish streaking on crown (1); flighty vs more sluggish behaviour#R (1); and seemingly somewhat different songs, although both involve much mimicry#R and recorded material currently very scarce. Monotypic.
Extreme S & E South Sudan, W & CS Ethiopia and W & C Kenya.
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