Or I should say, it was dangling from the tree until today, when it disappeared, like all its predecessors this year. Winter 2009 . Weaver bird nest in Johannesburg, South Africa. A sociable weaver bird sitting outside the community nest in Namibia. Some are not suspended very far from the branches while others may hang several feet below their attachment point. Which Bird Made That Nest? The males of many species of weaver bird are polygamous and may build more than one nests during one breeding season. Cobras can wipe out a whole nest filled with eggs in one big sweep. This is the third weaver bird nest dangling from the acacia tree in our yard:. This has always been a mystery to me – did they fall off during a storm, but then why wasn’t there a nest on the ground? Young males produce nests that aren't as well formed as those made by mature males, although even birds raised in isolation create nests of the kind their species make. December 28, 2009. ... Chimney swifts use their saliva to glue dry twigs onto vertical walls in a chimney cavity or hollow tree. Birds enter the nest through an entrance on the side. They are particularly well-known for their roofed nests, which in some African species form complex, hanging Having created a looped basis for the nest body, the weaver bird then builds the hollow body before adding the tubular entrance last. Having selected a good location for his nest, the weaver bird starts to loop and weave strands of grass or strips of leaves around the ends of one or two branches in a tree. This also helps to protect the nest from predators. by Bernd Heinrich. The weaver bird is a small bird native to Africa that is related to finches. Weaver nest building seems to come about through instinct and learning. Weaver, any of a number of small finchlike birds of the Old World, or any of several related birds that are noted for their nest-building techniques using grass stems and other plant fibres. Which Bird Made That Nest? The weaver bird will often build its nest on a tree branch that hangs over the edges of a river. Their main predators include snakes and small mammals. Birds That Build Pendant Nests: Baltimore orioles, caciques, oropendolas, and most weaver bird species. However, large birds commonly rest on top of the huge sociable weaver nests. In several weaver species the male begins a nest that becomes a platform for his mating display. Some predators take over the sociable weaver nest and make it their own home. Some weaver birds hang their nests from telephone poles.