Many species that are dependent on buildings are beginning to appear as more and more species of nature learn to adapt to city life. In the same vein, the concurrent loss of biodiversity presents a problem for the planning of vertical greening. This article attempts to explore the combination of animal nesting and vertical greening to develop a more species-friendly environment. The end goal is to create a flexible, easy-to-maintain, demountable, modular vertical greening system that can respond to changes in the ecosystem.