Another interesting gorilla fact is that they construct nests on the ground or in trees to sleep at night. Each gorilla builds a nest using leaves and branches before sleeping3.

Most gorillas spend their nights in the ground like adult mountain gorillas, rarely sleeping on trees. Meanwhile, adult western lowland gorillas prefer not to reuse their sleeping spot. Gorillas search for food where it is abundant; they frequently change locations and leave their nests behind.

Gorilla nests help experts count gorilla populations because they are easier to see. These abandoned nests provide valuable information to researchers studying ape groups. 

Nest counts can help experts estimate population size. Adult apes have individual nests, while baby gorillas sleep with their mothers until age 3. Outside the nest, a young gorilla also learns important skills and behaviors necessary for survival during this time. Hair samples from nests assess personal health. Nest feces indicate food availability and identify ape species based on smell.