Cape Palmas, Liberia.
Assignment of species rank to rufous-backed nigriceps has been based in part on it being “parapatric with bicolor along a line through central Africa without evidence of significant interbreeding”#R, and this arrangement is still followed in some current world lists; evidence for a parapatric distribution is, however, wholly lacking#R and the argument fails to take account of brown-backed woltersi or the fact that poensis back colour varies clinally from black in W to brown in E. Study of vocalizations needed. Birds in S South Sudan and E DRCongo intermediate between poensis and woltersi are sometimes treated as race stigmatophora (from Bukoba, on L Victoria), but better included in poensis. Proposed race minor (from Fanole, in S Somalia) is treated as a synonym of nigriceps. Four subspecies recognized.
Food and feeding
Status and conservation
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