PLANET EARTH Jungles

Signs of the enemy are detected and examined closely. The chimp militia（民兵） are now at the very edge of their territory. All need to be on maximum alert. Then it's wait and listen. An unfamiliar chimp call raises the tension. It's an uncertain time. The size of the rival group is as yet unknown. Not far away the neighbors are feeding in a fig tree oblivious to the approaching dangers.



The patrol moves off with a sense of purpose. They must remain silent until they close in on their rivals. The attack is on. To intimidate their opponents, the aggressors scream and drum on buttress roots. Several males corner an enemy female. It's a ferocious（凶猛的，残忍的） attack, and she's lucky to escape with her life. Others are not so fortunate.



The battle won, a grizzly scene unfolds. An enemy youngster has been caught and killed. The carcass（残骸） is shared between members of the group, and eaten. Killing a competitor makes sense if you want to protect your food supply but exactly why they cannibalize（吃同类的肉） the dead chimp, is not fully understood. It may simply be a chance for some extra protein.



Teamwork has brought this group of chimps great success but they'll soon reach the limits of their power. The competition for resources ensures that no one species dominates the jungle. The rainforest's great diversity has come at a cost. It has made them the most finely balanced ecosystems in the world only too easily upset and destroyed by that other great ape the chimpanzee's closest relative, Ourselves.