▁to ▁be ▁a ▁full ▁species , ▁Rh iz other a ▁d ul it ensis . ▁ ▁It ▁is ▁little - known , ▁rare , ▁and ▁has ▁not ▁been ▁recorded ▁since ▁ 1 9 3 7 . ▁ ▁Description ▁The ▁part ridge ▁is ▁ 3 0   cm ▁in ▁length . ▁Like ▁the ▁long - bil led ▁part ridge , ▁it ▁is ▁mainly ▁r uf ous - buff ▁in ▁colour , ▁with ▁a ▁lav ender - gre y ▁breast - band , ▁a ▁long , ▁black , ▁cur ved ▁bill ▁and ▁yellow ▁legs . ▁ ▁It ▁diff ers ▁from ▁the ▁long - bil led ▁part ridge ▁in ▁that ▁the ▁grey ▁breast ▁band ▁is ▁twice ▁as ▁wide , ▁and ▁the ▁under parts ▁are ▁wh it ish - buff ▁rather ▁than ▁bright ▁orange - buff . ▁ ▁Distribution ▁and ▁habitat ▁The ▁part ridge ▁is ▁conf ined ▁to ▁lower ▁mont ane ▁forest ▁on ▁the ▁mountains ▁of ▁Bor neo . ▁ ▁It ▁was ▁first ▁recorded ▁from ▁Mount ▁D ul it ▁and ▁later ▁found ▁on ▁Mount ▁Mur ud ▁and ▁Mount ▁B atu ▁Song , ▁all ▁in ▁northern ▁Sar aw ak . ▁ ▁Two ▁spec im ens ▁were ▁collected ▁by ▁Ever ett ▁on ▁Mount ▁Kin ab alu ▁in ▁Sab ah ▁in ▁ 1 8 9 5 , ▁but ▁it ▁has ▁not ▁been ▁recorded ▁from ▁that ▁state ▁since . ▁ ▁Status ▁and ▁conservation ▁O ren stein ▁et ▁al . ▁( 2 0 1 0 ) ▁suggest ▁that ▁the ▁part ridge ▁may ▁be ▁seriously ▁threatened ▁by ▁habitat ▁de grad ation ▁and ▁hunting