The sociable weaver (Philetairus socius), also commonly known as the common social weaver, common social-weaver, and social weaver, is a species of bird in the Passeridae family endemic to Southern Africa. It is monotypic within the genus Philetairus. It is found in South Africa, Namibia, and Botswana. but their range is centered within the Northern Cape Province of South Africa . They build large compound community nests, a rarity among birds. These nests are perhaps the most spectacular structure built by any bird.