A reindeer cyclone in all its glory

[Eldorado 60,914]

When startled, reindeer sometimes band together and keep moving in a constant swirling motion, in a behavior that is thought to confuse predators and make it more difficult to pick out a single animal from the herd.

"It's a defense strategy, designed to confuse any predator," PBS said in the documentary. "Whether wolf, bear, or Viking – achieving a clean kill in a swirling melee like this is difficult."

IFL Science

51secs

https://www.designboom.com/design/reindeer-cyclone-wild-way-of-vikings-pbs-04-01-2021/

Edited April 3 by Eldorado

[Manwon Lender 18,069]

2 hours ago, Eldorado said:

When startled, reindeer sometimes band together and keep moving in a constant swirling motion, in a behavior that is thought to confuse predators and make it more difficult to pick out a single animal from the herd.

"It's a defense strategy, designed to confuse any predator," PBS said in the documentary. "Whether wolf, bear, or Viking – achieving a clean kill in a swirling melee like this is difficult."

IFL Science

51secs

https://www.designboom.com/design/reindeer-cyclone-wild-way-of-vikings-pbs-04-01-2021/

Ants will do the same thing, except unless they are interrupted they will continue to move in that spiral until they die.

[Eldorado 60,914]

Sheep assemble into mysterious 'flock circles' in Rottingdean

https://www.theargus.co.uk/news/19216187.sheep-assemble-mysterious-flock-circles-rottingdean/