Regardless of how many skincare products one applies to save face (literally) before going to bed, it's doubtful that any human has quite the intensive pre-sleep routine that chimps do. Scientists have known for quite some time that the primates are rather particular about where they sleep, but Smithsonian Magazine breaks down new research that reveals chimpanzees might be even pickier than we thought:
Like a ritualistic Ragnarok of slumber, each night chimps recreate their place of rest, constructing a brand new sleeping nest from scratch. This time-consuming task involves bending and breaking stiff stems and interweaving it with foliage to create a thick, bouncy mattress-like structure...
The authors of the new study sampled 1,844 nests at Toro-Semliki Wildlife Reserve in southwest Uganda. They recorded the type of tree each of those nests occurred in, along with the physical characteristics of the trees, including branch stiffness and bending strength and leaf shape and density. All together, they gathered data from seven different tree species that the chimps used.
The study found that chimps prefer to sleep in a specific type of tree, known as Ugandan Ironwood, which are relatively rare but dominated as the animals' "bedframes." Next, the researchers plan to investigate how the chimps construct their "mattresses," which we can only expect to be rather cushy.