South-eastern Nigeria, western Cameroon and Bioko I (Fernando Póo); eastern DRCongo, western Uganda, south-western Rwanda, western Burundi and western Kenya.
 
Population
Estimated population is unknown (2010).
Grey-chested Babbler (Kakamega poliothorax) [XC754837]
by Jaap van der Waarde from Kakamega Forest (near Kakamega), Shinyalu, Kakamega County, Kenya (song)
Grey-chested Babbler (Kakamega poliothorax) [XC365737]
by Jacob C. Cooper from Pump house Trail, Nr. Forest Station, Kakamega, Kenya (call)
Subspecies
No subspecies.
Affinities uncertain. Has been placed in genus Malacocincla, and possibly belongs in Modulatrix. Recent molecular research indicates possible relationship with the sugarbirds (Promeropidae), whereas some evidence suggests that it may belong in the thrush family (Turdidae). More study needed. Despite fragmented distribution, geographical variation virtually non-existent.