Mt Sibayak, Batak Highlands, Sumatra.
Until recently considered conspecific with A. campbelli, A. sumatrana and A. orientalis#R. Present species differs from A. campbelli in its pale reddish-brown (vs greyish) breast (2) cutting off sharply to an all-white belly (vs shading through greyish to whitish belly) (ns); bold black-and-brown barring above (vs much weaker scalloping) (2); more brownish shading to grey patches on the wing-coverts (vs clear grey) (ns); lack of darkish grey side-collar and hindneck extending from the breast (ns); lack of blackish crown (ns); and bold white-barred black (vs soft-edged buff-grey-and-blackish) flank feathers (3). It differs from A. sumatrana in its pale reddish-brown (vs greyish) breast (2) cutting off sharply to an all-white belly (vs shading through greyish to a whitish belly) (ns); blacker flanks with narrower but bold white bars (2); and contrasting black and white face and mostly black throat (vs largely dark grey face and paler grey throat) (3). Sometimes also considered conspecific with A. javanica and A. brunneopectus, but morphological similarities normally attributed to convergent evolution. Monotypic.
Batak Highlands, in N Sumatra.
Food and feeding
Status and conservation
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