Normally treated as a race of B. thoracicus, but here recognized as a species on basis of restriction of (slightly darker) chestnut to chin and throat (i.e. lower face, malar area and neck-side to breast grey vs chestnut), with no contrasting lower edge of chestnut to grey breast (3); lower breast to undertail-coverts darker (tan vs buff) with extensive, large chestnut ovoid spots vs smaller black ovoid spots fewer in number and restricted to flanks (3); fewer and smaller white spots on wing-coverts and mantle (1); reduced buff edges of wing-coverts (ns); darker, duller grey-green on back to tail (ns); and crown tinged more rufous (ns)#R. Genetic data provide some support for this split#R. Monotypic.
Introduced to Japan (perhaps extirpated).
Food and feeding
Status and conservation
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