An adult African elephant consumes about 223 liters of water and 3,080 pounds of roots, grass and fruit daily. That's like having 634 cans of soda and 1,200 hamburgers every day. This keeps them moving thousands of miles across Africa each year. Elephants usually migrate ( 迁 徙 ) between March and May. Females live in groups with their children, and quickly run out of the food supply. They hit the road in search of food. Male elephants live alone, so they don't use resources as quickly as the females. Instead, they migrate during their mating cycle. When the females pack their trunks, so do the males.
During migration, elephants face short water supplies and extremely high temperatures. But people are their number-one problem. Poachers (偷猎者) kill 35,000 elephants each year for ivory. Many African farmers build fences (栅栏) to protect crops and cattle, which might block regular migration paths. Traffic roads affect elephant migration, too. During one study of 28 elephants in Central Africa, only one female crossed an unprotected road.
Scientists, wildlife organizations and governments cooperate to find solutions for Africa's elephants. "To unlock the secret of where elephants move and how they move, we place collars (项圈) with a satellite unit inside," Dr. Michael Chase says. GPS collars help map which routes elephants use most so that countries can establish protected elephant passages.
Locals come in as well. James Isiche, East Africa Director of the International Fund for Animal Welfare says, "We have got the community on our side by a project; they've agreed to partner with us to conserve elephants." The local community run wildlife parks to attract tourists. "This project helps us take care of both the wildlife and our cows," says Sikira, a tribal elder in Maasai, Kenya. Protecting elephant migration routes allows these gentle giants to survive.
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