Habitat
Subtropical and tropical lowland moist forest. Also, subtropical and tropical montane moist forest, heavily degraded former forest. From sea-level - 1,700 m.
Horsfield's Babbler (Malacocincla sepiaria) [XC214481]
by Frank Lambert from Johor, Panti Forest Reserve, Bunker Trail, cKm5, Malaysia (song)
(Malacocincla sepiaria) [XC665339]
by Jelle Scharringa from Endau Rompin National Park, Brunei (song)
Subspecies
Horsfield's Babbler (Malacocincla sepiaria) and Vanderbilt's Babbler (Malacocincla vanderbilti) (Sibley and Monroe 1990, 1993) have been lumped into Malacocincla sepiaria following Hoogerwerf (1966). Gender agreement of Malacocincla sepiaria follows David and Gosselin (2002a).
Previously thought to be conspecific with Black-browed Babbler (Malacocincla perspicillata). Form described from Aceh (northern Sumatra) as Vanderbilt's Babbler (Malacocincla vanderbilti) now known to be synonym of subspecies barussana of present species. Proposed subspecies liberale (north-western Sumatra) merged with barussana, and minor (eastern Java and Bali) with nominate.
The following 5 subspecies are recognised:
tardinata Hartert, 1915 - Extreme southern Thailand and Peninsular Malaysia.