The Moustached Babbler forages in small groups in the middle levels of Southeast Asian forest. It is brown above and whitish below, with a dark moustachial stripe.
It is dull brown above and whitish below, with a dark moustachial stripe. The Bornean subspecies has a darker crown.
It eats insects, gleaning prey from leaf surfaces. Small groups move through the middle storey of forest; on Borneo it nests in low trees about 1 m above ground.
It builds an open cup nest in a sapling about 1 m above ground and lays two eggs.
The bill is grey and hooked, and the tail is dull chestnut.
An extinction-risk assessment has not been added yet.