Roll's Partridge Arborophila rolli Scientific name definitions

c. 28 cm. Has forehead to nape dull brown with darker speckles/streaks, usually a whitish spot on lores, face black and white, throat mostly black; boldly barred black and brown above, wing-coverts brownish but shading to grey patches; pale reddish-brown breast sharply demarcated from all-white belly, flank  feathers boldly white-barred black; iris brown, reddish-orange circumorbital area; bill black; legs red. Differs from A. campbelli in pale reddish-brown breast sharply separated from all-white belly, bolder barring above, more brownish on wing-coverts, lack of dark grey lateral collar and hindneck extending from breast, and white-barred black flank feathers; from A. sumatrana in pale reddish-brown breast sharply separated from all-white belly, blacker flanks with narrower but bold white bars, and contrasting black-and-white face with mostly black throat. Sexes similar, female often somewhat duller. Immature apparently undescribed.

Batak Highlands, in N Sumatra.

Broadleaf forest in foothills and mountains, to upper montane level; 500–2000 m.

Appears to be sedentary.

Little information.

Various whistles described, but no differences known between this species and A. sumatrana.

No information available.

Not globally threatened (Least Concern). Mace-Lande: vulnerable. Poorly known. Thought to be common, and numbers apparently stable (2 Madge, S., and P. McGowan (2002). Pheasants, Partridges and Grouse, including Buttonquails, Sandgrouse and Allies. Christopher Helm, London, UK. Close ).