Durban, South Africa.
Often considered conspecific with T. hottentottus, but treated as separate species in a recent systematic list#R and differs on account of female underparts unspotted vs black-spotted and/or black-barred on tan breast and white flanks (3); male underparts pure white below tan breast vs broadly barred from breast to mid-belly and thence onto flanks (3); rump and uppertail (both sexes) blackish vs as rest of upperparts or slightly darker (2); irides bluish-white vs pale yellow (ns); legs whitish-flesh vs yellow (ns); clear supercilium vs white-flecked (ns); slightly smaller size#R (assume 1); grassland vs “restionaceous fynbos”#R (1); and apparent differences in migratory behaviour, but these not clearly understood (ns). Possible N races lucianus and insolatus now considered inseparable from nanus. Monotypic.
Irregular and local in sub-Saharan Africa, mainly from Nigeria E to Uganda and Kenya, S to Angola and E South Africa; status and limits of range particularly uncertain in W Africa (reported W as far as Sierra Leone and as a breeder to Ivory Coast)#R.
Food and feeding
Status and conservation
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