Unicolored Thrush is endemic to Bolivia. Its plumage is dark and subdued, and the Birds of Bolivia account describes it as shy and usually solitary in the middle or lower understory.
It has dark, dull plumage, faint throat streaks, a dull yellow-olive bill and a faint brownish-yellow eye-ring.
It is usually solitary and shy, moving in the middle to lower understory. Records include várzea forest galleries, taller floodplain-forest edges, and occasional semi-deciduous forest on higher ground.
An extinction-risk assessment has not been added yet.