About Ploceus nigerrimus Vieillot, 1819
Vieillot's black weaver, with the scientific name Ploceus nigerrimus Vieillot, 1819, is a bird species that belongs to the weaver family Ploceidae. Its distribution ranges from southern Nigeria to Uganda, western Kenya, Angola, and the Democratic Republic of the Congo. This species gets its common name from Louis Pierre Vieillot, a French ornithologist. Previously, Vieillot's black weaver was treated as conspecific with the chestnut-and-black weaver (Ploceus castaneofuscus). The two species were split into separate species after researchers identified striking differences in their plumage coloration.