Nomads keep moving for different reasons. Nomadic foragers move in search of game, edible plants, and water. Australian Aborigines, Negritos of Southeast Asia, and San of Africa, for example, traditionally move from camp to camp to hunt and gather wild plants.
Some tribes of the Americas followed this way of life. Pastoral nomads make their living raising livestock such as camels, cattle, goats, horses, sheep or yaks; the Gaddi tribe of Himachal Pradesh in India is one such tribe. These nomads travel to find more camels, goats and sheep through the deserts of Arabia and northern Africa. The Fulani and their cattle travel through the grasslands of Niger in western Africa. Some nomadic peoples, especially herders, may also move to raid settled communities or to avoid enemies.
Nomadic craftworkers and merchants travel to find and serve customers. They include the Lohar blacksmiths of India, the Romani traders, and the Irish Travellers.