Reindeer Cyclones are a phenomenon where a herd of anxious reindeer forms a swirling mass, making it difficult to single out individual animals. 

The fawns remain protected at the centre of this circular stampede.

 https://t.co/YHKi6EWEkM https://video.twimg.com/ext_tw_video/1840949111702339584/pu/vid/avc1/720x1280/4bOND8DUOzTNqLwg.mp4?tag=12