Herding reindeers sure looks a lot like controlling alien locust swarms

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When you get hundreds of reindeers together and try to move them around, they turn into one gigantic sentient-seeming swarm that spins around together. This footage, taken from above with a drone by photographer Jan Helmer Olsen, shows the stunning spirals that are created when herding reindeers. It's got to be dizzying for them.

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