After a decade of relative calm for these animals - the same cannot be said of the humans around them - wildlife officials report at least 10 have been killed this year. Photographs documenting the slaughter are heartbreaking, mostly because of the peaceful, human-like expressions the dead gorillas wear.

These pictures are part of the tool kit brought to the United States by Arthur Mugisha, a former game warden in Uganda and now manager of the International Gorilla Conservation Programme. Mugisha acknowledged that the people of Congo can well survive without the mountain gorilla, even though they might not survive the continuing conflict between government forces and rebels in the Virunga National Forest. But he said the plight of the gorillas was one way to focus attention on the plight of the humans.

"If we were not talking about gorillas ... the story would be very different," Mugisha said. "It would be another group of people who are suffering and dying, and the world continues." No one really knows why mountain gorillas are being killed now, though jealousy might play a role, said Craig Sholley of the African Wildlife Foundation.

In this area of rich biodiversity, Uganda and Rwanda have been able to capitalise on gorilla tourism, Sholley said, with tourist permits alone accounting for about $15 million in annual revenue. The Democratic Republic of Congo's unstable Government has been unable to do the same. "Folks in Congo are taking a look at the successful situation in Rwanda and Uganda, which have revitalised over the last several years, and they're jealous," Sholley said. "A degree of jealousy has led to a degree of institutional breakdown that is causing problems in terms of enforcement on the ground."

Personal animosity might also be a factor, Mugisha said, with gorilla killings becoming a way to settle scores against those charged with protecting the creatures. What is clear is that fighting between Congolese military and rebels in the park has left gorillas unprotected as park rangers and civilians flee from violence.

"They live hour by hour, not even day by day, because any time they can die," Mugisha said of the people living in the area. "These are communities that are looking for livelihood, but they are not sure if they will be able to see tomorrow, so it's a very frustrating and empty life that they are living." The possibility for change might lie in saving the gorillas and their environment, Mugisha said. His program works to make sure that, through the gunfire, wildlife professionals are still able to go into the gorilla areas to do their jobs.

The program also encourages such activities as bee-keeping and mushroom cultivation that individual families can do in and around their homes and that can bring in money. A trans-boundary strategy to protect mountain gorillas has been supported by the political powers in Democratic Republic of Congo, Uganda and Rwanda, he said. It lets wildlife organisations such as Mugisha's take a neutral stance to warfare while trying to preserve gorilla populations.

It also aims to save the forests where the gorillas live, rather than clearing the trees for cropland. For those whose fields lie just outside the forest, the gorillas can be a nuisance. So Mugisha and others have set up Human Gorilla Conflict Organisations - like neighborhood watch groups, except, instead of keeping the area clear of crime, they aim to keep it clear of crop-raiding mountain gorillas. "These gorillas are intelligent and they know they are crop-raiding," Mugisha said. "So when there is an organised group that comes, we can actually chase them without harming them."

Though they can appear threatening and are certainly large and strong, mountain gorillas are very timid, Sholley said. "If you put a force of 10 people between them and the gardens, the gorillas are in no way, shape or form going to go into the gardens," Sholley said.

Reuters