The Old World babblers, belonging to the family Timaliidae, are a group of passerine birds native mostly to the Old World, particularly thriving in the tropical regions of Southeast Asia and the Indian subcontinent. Exhibiting a wide range in size and color, these birds are best known for their soft, fluffy plumage. They are generally small to medium-sized with strong legs, often appearing terrestrial. Their bills vary from thrush or warbler-like to the decurved ones seen in scimitar babblers. Colors predominantly skew towards brown with some species being more colorful, and dimorphism between sexes is often minimal. Old World babblers are not highly migratory and are adapted to life in lightly wooded or scrubland habitats, ranging from swamps to near-deserts. Insectivorous by nature, they also consume berries, and the larger species may prey on small vertebrates like lizards.
These birds tend to live and breed in communal groups, sharing the responsibility of raising the young; young males stay with the original group while females tend to leave in search of new groups to prevent inbreeding. Their nests, made from twigs, are cleverly hidden in dense foliage. For many years, the classification of Old World babblers remained challenging, with the group being used as a catch-all category for many difficult-to-classify passerines. However, recent molecular studies have shed light on their taxonomy, spreading them across various families and confirming that they do not form a monophyletic group. The family as currently recognized comprises 58 species across ten genera, including the well-known scimitar babblers and wren-babblers among others, notable for their diverse sizes and habitat preferences.