Tree hollowing is a natural process where the interior of a tree trunk becomes hollowed out, often due to decay or damage. This can occur from various factors, including fungal infections, insect infestations, or physical injuries. As the tree ages, the heartwood may deteriorate, leading to the formation of cavities. Hollow trees can provide essential habitats for many species, such as birds, bats, and small mammals. These cavities offer shelter and nesting sites, contributing to the biodiversity of ecosystems. Additionally, tree hollows can play a role in nutrient cycling as they decompose, enriching the surrounding soil.