Cryptic, uncommon nightbird of lowland and lower foothill forests (to 800 m). Males show extensive barring on wings, whitish lower belly, and irregular white blotches on the breast. Females are warmer brown, almost rufous, with less wing barring and a wide “necklace” of white blotches on breast. The only frogmouth in much of its western range, but difficult to separate from other frogmouths. Hodgson’s, Sunda, and Short-tailed Frogmouths more boldly and heavily marked; Bornean Frogmouth less heavily marked. Vocalizations vary, depending on range (and subspecies), and include trills, whistles, and croaks.