👉 A nest weapon, also known as a brood parasite's nest defense or parasitic nest defense, is a specialized structure or behavior employed by certain bird species to protect their nests from predators that target their eggs or chicks. These birds, often brood parasites like cuckoos, lay their eggs in the nests of other bird species. To deter predators, they may construct a modified nest structure that blends in with the host's nest or build a separate, concealed nest nearby. Alternatively, some species may aggressively defend their nests by attacking intruders with their own eggs or chicks, ensuring that their offspring receive protection and increasing the survival rate of their young. This behavior showcases a complex interplay between parasitic birds and their hosts, highlighting the evolutionary adaptations that have developed to ensure reproductive success.
