This grasshopper-warbler lives in forests on Sulawesi, where it feeds on insects and other small invertebrates in dense cover.
The Sulawesi form castaneus is described as 14–15 cm long, with rufescent to chestnut upperparts, a grayer side of the head and pale supercilium. The upper breast is slate-grey, the chin and throat grey-white, and the lower breast dark brown.
The species account lists forest and dense vegetation as habitat and invertebrates as food. It does not describe a specific foraging or breeding behavior.
An extinction-risk assessment has not been added yet.