Adjective
inhabiting or frequenting trees
Source: WordNetarboreal apes Source: Internet
In nature, plants are important environmental structures that provide living space and shelter for the majority of animals, whether arboreal (tree-living), terrestrial (ground-living), fossorial (underground-living) or aquatic (water-living). Source: Internet
Given we know that all great apes build nests, and that many early hominins retained adaptations for tree-living such as feet that could grasp onto branches or food, it is likely that they also built varied nests. Source: Internet