The Karoo Thrush inhabits arid scrublands and grasslands, preferring the denser vegetation along drainage lines in these otherwise open areas. They’re also one of the most common garden birds all over their range, a fact that has aided an increase in both their range and population. Karoo Thrushes are usually seen singly or in pairs and follow an omnivorous diet, searching on the ground and scrounging through leaf litter for insects, worms, other invertebrates, small vertebrates and fruits and seeds. Adults are about 23cm long and weigh up to 86g.
At the start of the breeding season, which stretches through spring and summer, female Karoo Thrushes build cup-shaped nests of wet grass and other plant material in the forks of trees. They incubate clutches of 1-4 eggs for about two weeks, with the chicks becoming independent about 2-and-a-half months after hatching.
The Karoo Thrush occurs mainly in the central and western parts of South Africa, extending marginally into Lesotho, Botswana and Namibia. The IUCN considers it to be of least concern. It was previously classified as a subspecies of the Olive Thrush, which is generally found in forests.