Medium-sized, long-tailed, gray-brown bird. Note heavy diffuse streaking below and pale eyebrow. Madagascar endemic that is found mainly in marshes, though it will also use mangrove, heath, and moist scrub. Generally skulks in thick undergrowth, though it will sit out in the open to sing. Musical, reeling song: “chup-cho-we-we-we”. Similar to brush-warblers, but has more distinct breast streaking and white eyebrow, and is generally found in marsh rather than dry scrub or forest.