Brief reminder of Part 1 (without mistake ) . The gorilla has reached a critical point of extinction due to a number of factors , including the destruction of their natural habitat caused by the clearing of forests , illegal hunting for their meat , which is considered a succulent delicacy , and infectious diseases when they come into contact with tourists . However , conservation efforts are underway , with the creation of nature parks . In the Democratic Republic of Congo , ecotourism is being use to protect the endanger Eastern Lowland Gorilla . Ecotourism programmes allow visitors to discover the gorillas in their natural habitat , and the income from tourism helps to finance the park ' s operations . However , the gorilla need to be familiarised with humans . For this reeson , the park rangers are given a three-month ' habituation ' course . They have to gradually familiarise themselves with a group of gorillas led by a ' silverback ' male so that tourists can enter their teritory without risk . To get the animal used to the presence of humans , he has to imitate the gorillas by rubing its chest or cheeks . By the end of the first day , this presence is accepted by the young animals , but not by the males . Their challenge : to get close to a ' silver ' back , while remaining 7 metres away , without it charging , but their presence is essantial . Over the following weeks , the dominant male gradualy accepts their presence and adopts a submissive posture : the male is accepted and the training course is a success . It is said that gorillas acustomed to human presence are more vulnerable , but would they be better protected against war or hunters ?
