Ostriches are raised and recycled. Ostrich meat is delicious and nutritious, and leather and feathers are of high economic value, so there is a certain demand in the market. Some companies and enterprises will provide bag recycling service, which involves signing contracts with farmers to recycle finished ostriches at a fixed price under certain conditions. Ostriches are huge, and the height of adult birds can reach 2.5 meters. The weight of male ostriches can reach150kg, and the feather color varies with gender. Male birds are mainly black, and female birds are grayish brown. Ostrich can't fly because of the underdeveloped keel process, but its hind legs are thick, suitable for running and can run very fast.