Chestnut-vented warbler
The chestnut-vented warbler, chestnut-vented tit-babbler or rufous-vented warbler is an Old World warbler.
The chestnut-vented warbler breeds in southern Africa in Angola, Botswana, Zimbabwe, Zambia, Namibia, South Africa, Lesotho, Mozambique and... Wikipedia
Scientific name: Sylvia subcaerulea