A decayed tree is a tree that has undergone significant deterioration due to various factors such as age, disease, or environmental conditions. This decay often leads to the breakdown of the tree's structure, making it weak and unstable. Fungi, insects, and bacteria play a crucial role in this process, breaking down the wood and contributing to the tree's eventual collapse. Decayed trees can be found in forests, parks, and other natural areas. While they may seem lifeless, they provide essential habitats for many organisms, including birds, insects, and fungi. Additionally, decayed trees contribute to soil health by returning nutrients to the ecosystem.