The Olive-headed Weaver lives in montane miombo woodland in southern Tanzania and nearby regions. Males have a bright yellow crown and rusty breast.
The head and upper tail are dusky olive, with yellow underparts. Males have a brighter yellow crown and rusty breast; juveniles are paler.
It searches branches for insects and is seen in pairs or small groups. It does not nest in large colonies.
An extinction-risk assessment has not been added yet.