Chunky, mid-sized, remarkably drab bird. Found in the understory of montane forest, usually in small groups. Very shy and skulking, rarely seen unless expressly searched for. Most often detected by voice: a descending series of whistles, usually given together by a group of birds, some of which add lower “chuk” notes. Similar to African Hill Babbler, but has a dull-brown rather than rich rufous-brown back. Also very similar to other illadopsises, but generally found at higher elevations, and has a less distinct white throat.