Watch a drone herding cattle across open field. The popularity of drone use in agriculture has increased over the past few years, and drones are now being used around the world to herd animals like cows and sheep. People who move herds over large swaths of land are saying it’s a more efficient and effective way to get the job done, and it allows them to keep an eye on the land and cattle more easily.
http://news.nationalgeographic.com/2017/08/drone-herd-cattle-field-california-video-spd/