The White-tailed Ant Thrush keeps to forest undergrowth and the forest floor. The East African account describes broad white tips on the outer tail feathers and records the species in western Uganda and Kenya's Kakamega Forest.
In the East African field-guide account, the upperparts are dark, the throat sooty brown, and the remaining underparts dusky chestnut. The three outermost tail feathers have broad white tips.
In East Africa, it inhabits dense forest and swamp-forest margins, keeping to the undergrowth and forest floor.
An extinction-risk assessment has not been added yet.