A dull-colored, whistler-like songbird confined to Sulawesi. Mostly dull green with red eyes, a grayish underside, yellowish flanks, and a rusty base to the undertail. Females show throat streaking that is absent in males; the streaks are white in the southwest and yellowish in the north. Juveniles have an olive-brown head and buff-striped olive underparts. Singles and pairs occupy the subcanopy of montane forest. Separated from female Maroon-backed Whistler by yellow flanks, red eye, slim pointed bill, and tendency to sit high in the trees. Calls include a high-pitched thrush-like “tsip” and a nasal “jheeze.” Song comprises very high-pitched, twittering whistles.