The Sociable Weaver or Social Weaver (Philetairus socius) is an avian species endemic to Southern Africa. They build huge compound community nests, a rarity among birds. These nests are perhaps the most spectacular structures built by any bird. They can house over 100 pairs of birds containing several generations at a time. The nest provides birds with better temperature relative to outside. Central chambers retain heat and are used for nighttime roosting. Outer rooms are used for daytime shade. The nest appears like a big haystack in the tree. Seen from below, several entrances into the chambers can be seen, giving a honeycomb effect.
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