The 1st rule of 'Deer Fight Club' must be 'You don't talk about Deer Fight Club'.  Cuz I have never heard or seen this kind of deer conduct before.

This video was taken the first part of April around Tomar Park near 41st and Minnesota here in Sioux Falls, South Dakota.

It was a very long winter and apparently that makes deer extra cranky?  I don't know who started the ruckus but someone needs a time out.