Nest build fresh nests daily out of leaves and other vegetation in which they sleep at night. They sometimes also build nests during the day for resting in. The smaller species of gorilla build their nests in trees, while the larger are confined to the ground. Nests of the western gorilla, the largest species, measure about in diameter. Some species of frog build nests ranging from simple to modest complexity. Many stream-dwelling frogs lay their eggs in a gelatinous mass which they attach to underwater vegetation. The jelly structure prevents the eggs from washing away. Fish engage in nest building activities
Nest box have peaked at 280 bats roosting in them. The biggest problem with roosting boxes of any kind is the ongoing maintenance; problems include boxes falling down, wood deteriorating, and pests such as ants, the occasional rat, possums, and spiders. Nest boxes are marketed not only for birds, but also for butterflies and other mammals, especially arboreal ones such as squirrels and opossums. Depending on the animal, these boxes may be used for roosting, breeding, or both. Or, as in the case with butterflies, hibernation. Wasps may build their nests inside a nest box intended for other animals, and may exclude