A fairly small, rare, little-known ground bird from the highland grasslands of Luzon. Overall brown, heavily patterned with dark-centered feathers overlaid with pale buff streaking. Shows variable amounts of rufous on the underparts, more extensive in the female, and some white in the throat and belly. Occurs together with Barred and Spotted Buttonquails and Blue-breasted Quail, but Luzon is somewhat smaller than those, especially Spotted, and has a thick, silver bill.