Weaver's Nest

The Weaver nests in colonies, mainly from September to January. Males have several female partners, and build a succession of nests, typically 25 each season. The nests, like those of other weavers, are woven from reed, palm or grass. A female will line a selected nest with soft grass and feathers. The nest is built in a tree, often over water, but sometimes in suburbia. This weaver also nests in reeds.
The Southern Masked Weaver lays eggs of a various colour and this helps it to evade parasitisation by cuckoos because the cuckoo has no way of knowing what kind of eggs are inside the weaver's nest until it has entered the nest to attempt to lay one itself. Eggs of the wrong colouration are ejected by the nest owners