grey waxbill

{{short description|Species of bird}}

{{Speciesbox

| name = Black-tailed waxbill

| image = Black-tailed Waxbill, Sakania, DRC (8085664974).jpg

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn|author=BirdLife International |author-link=BirdLife International |year= 2016 |title= Glaucestrilda perreini |page= e.T22719522A94631416 |doi=10.2305/IUCN.UK.2016-3.RLTS.T22719522A94631416.en |access-date=13 December 2023}}

| taxon = Glaucestrilda perreini

| authority = (Vieillot, 1817)

| synonyms =Estrilda perreini

}}

The grey waxbill or black-tailed waxbill (Glaucestrilda perreini) is a common species of estrildid finch found in wetter land of Southern Africa. It has an estimated global extent of occurrence of {{cvt|670000|km2}}.

There are two recognized subspecies:{{cite web| editor1-last=Gill | editor1-first=Frank | editor1-link=Frank Gill (ornithologist) | editor2-last=Donsker | editor2-first=David | year=2023 | title=Waxbills, parrotfinches, munias, whydahs, Olive Warbler, accentors, pipits | work=World Bird List |version= 13.2 | url=https://www.worldbirdnames.org/bow/waxbills/ | publisher=International Ornithologists' Union | access-date=13 December 2023}}

• Glaucestrilda perreini perreini (Distribution: Gabon to northern Angola and east to southern Tanzania)
• Glaucestrilda perreini incana (Distribution: Southern Malawi and Mozambique to eastern South Africa)