The type of animal known for building nests in trees is the bird. Many species of birds construct nests utilizing various materials such as twigs, leaves, and grasses. These nests serve multiple functions: they provide a safe location for laying eggs, raising young, and protecting from predators. Tree-nesting birds exhibit a wide range of nesting behaviors and designs, often specific to their habitats and needs. Notable examples include robins, sparrows, and woodpeckers. Trees offer shelter and camouflage, increasing the chances of survival for both adult birds and their chicks.