Chimpanzee group in a tree (Pan troglodytes)
Here, a large captive chimpanzee sub-group rests and observes the nearby waters edge from the tree canopy, often making distress calls informing other members of the group to possible danger seen within the water. A chimpanzee group can be extensive in size, with them often forming fusion-fission groups, meaning one large group often splits into smaller groups and meets later to swap members. With the group in this photo notifying other members of the same group elsehwere of the dangers. Chimpanzees in this image are captive.
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