Mountain Mouse-Warbler is a small bird of the New Guinea mountains, about 12 cm long. It has dark brown upperparts, rufous uppertail coverts, and a white throat. It searches for insects on the ground or in low vegetation in moist montane scrub and forest-edge grassland. The account also gives the former combination Crateroscelis robusta.
It is about 12 cm long, with dark brown upperparts, rufous uppertail coverts, and a white chin and throat.
It uses moist montane scrub and grassy forest edges, searching for insects on the ground or in low vegetation.
An extinction-risk assessment has not been added yet.