South Africa/NC: Sociable Weavers

Sociable weavers are endemic to western Cape is South Africa and are absolutely unique birds – they build the biggest nests of any birds in the world that last for generations of birds and house hundreds of them. These nests are often constructed in acacia or camel thorn trees and even on utility poles. Their nests are instantly recognizable, massive and resembling huge apartment blocks, multistory and up to 4m high! Photographic evidence has proven that some of these nest structures are over 100 years old. Some of the utility companies in South Africa design reinforced poles to withstand the weight of nests that can reach into tons. Inside, there are many tunnel chambers for both breeding and living. Their nests are fireproof and rainproof. Interestingly, breeding is actually triggered by a rainfall and then every couple produced 4-5 chicks, born almost at the same time. A mating pair can produce chicks 4-8 times per year depending on the rains, sometimes skipping an entire year. They are mostly insectivorous and drink no water. They never migrate.