The Black-tailed Waxbill Estrilda perreini is a common species of estrildid finch found in wetter land of Southern Africa. It has an estimated global extent of occurrence of 670,000 km².
It is found in subtropical/ tropical (lowland) moist shrubland habitats in Angola
, the Republic of Congo
, the Democratic Republic of the Congo
, South Africa
. The status of the species is evaluated as Least Concern
BirdLife Species Factsheet