People destroy birds' habitat by cutting down forests and draining marshland. A bird can die if it swallows a fishing hook, or fishing line, or rubbish that could injure or choke it. People sometimes steal birds' eggs, but if they disturb or look in nests, parent birds will leave their chicks to die. Exotic birds, such as parrots, pheasants, hummingbirds, eagles, and birds of paradise, are trapped to be sold as pets and often die while being transported. They are also killed for their beautiful feathers, or to be stuffed.