Villa Bella de Mato Grosso, Mato Grosso, Brazil.
Part of a complex that includes N. chrysocephalum, N. pallescens, N. aurifrons and N. chrysolophum. Differs from N. chrysocephalum and N. aurifrons in characters given under those species; from N. pallescens by its more uniform, less white-streaked throat (1); more olive, less grey breast (2); shorter, narrower, paler yellow crown (2); pale yellow vs whitish-grey belly (ns); shorter wing and tail (at least 1); and nasal wraanh-wraanh vs soft low nasal wraah wra-wra#R (perhaps only 1); and from N. chrysolophum by its shorter, narrower, paler yellow crown (2); darker olive upperparts and tail (1); longer bill and wing (small sample for chrysolophum but allow 2); and nasal wraanh-wraanh vs chip, chip, dree-zee-zee, zew#R (4). Monotypic.
CE & SE Peru (SW Loreto and E San Martín S to Madre de Dios), N & C Bolivia (S to Cochabamba and N Santa Cruz) and adjacent parts of W Brazil.
Food and feeding
Status and conservation
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