Turkwel River, Kenya.
Closest to T. flavirostris and T. leucomelas, but close also to T. monteiri and T. erythrorhynchus (and presumably T. damarensis), on basis of similar calls and behaviour, and DNA studies#R. Sometimes considered conspecific with T. deckeni, but differs in its white spotting on wings (3); less yellow on bill tip (line cutting down rather steeply from end of vestigial casque where this is visible, more angled back in deckeni to make bigger area of yellow) (1, possibly 2); smaller size (mean tail of male 206 vs 221, female 178 vs 196#R) (at least 1); has parapatric distribution (3); seemingly different voice#R, described as “louder, more hollow and often slower, each note more distinct”#R. Monotypic.
SE South Sudan, NE Uganda and NW Kenya; regular presence in SW Ethiopia uncertain#R.
Food and feeding
Status and conservation
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