How does the architecture of the Sociable Weavers differ from the solitary structure of the Baya Weaver?

They construct sprawling communal nests

The diversity observed within the Ploceidae family showcases various evolutionary adaptations to solve common ecological challenges, leading to distinct architectural styles between species. While the Baya Weaver is known for building a solitary, pendulous structure designed around individual reproductive success, the Sociable Weavers exhibit a completely different strategy. They engage in large-scale cooperative architecture, constructing massive, sprawling communal nests that house numerous pairs. This variation contrasts sharply with other species, like the Red-billed Quelea, which builds nests in dense clusters for collective protection, demonstrating how the building instinct is fine-tuned based on the species' inherent social structure and local environmental risks.