Biology
The Behavioral Ecology of Sleeping Site Selection in Primates
Quick fact
Many primates, including chimpanzees and orangutans, build a fresh sleeping nest each night, a behavior that may reduce parasite exposure and predator detection, and also serves as a portable 'bed' wherever the day's foraging ends.
Why this is interesting
Every night, a chimpanzee builds a new bed of leaves and branches high in the trees, while a gorilla simply curls up on the ground. Why such different choices? The answer is a life-or-death puzzle that shapes primate behavior, social bonds, and survival.