A. Smith, 1840,
Kafirland eastward toward Port Natal = Durban, South Africa.
Commonly treated (including in HBW) as two species, C. olivacea (with races changamwensis, neglecta, alfredi and olivacina) and C. obscura (with races guineensis, cephaelis, ragazzii, granti and sclateri), but key claim that “the two differ in vocalizations” (HBW) not upheld in analysis here#R; moreover, mtDNA evidence supports conspecificity#R and differences in plumage relatively minor. Races guineensis and cephaelis intergrade in Ghana–Togo region. Additional proposed races are chyulu (described from Chyulu Mts, in S Kenya), which is merged with neglecta; puguensis (Mafia I, off N Tanzania), synonymized with changamwensis; intercalans (Fort Jameson, in Eastern Province of Zambia), included in alfredi; daviesi (Pondoland, in coastal E South Africa), considered indistinguishable from nominate; and vincenti (from Kapenguria, in W Kenya) and lowei (from R Kafulafuta, in W Zambia), insufficiently distinct from ragazzii. Name pembae is a junior synonym of granti. Eleven subspecies recognized.
Food and feeding
Status and conservation
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