So a yesterday I went to buy a rooster from a breeder a few states away and I was driving in a bit of a traffic jam so I was looking around and I noticed there were lots of chickens everywhere and I noticed two dubbed roosters and they were casually walking to each other and started fighting so I was like oh crap and there going at it and one hits the other in the head I'm guessing very hard and he just goes like crazy as if he was dead and he was just flopping and flapping and I was like how? But he later got up and walked away and I was wondering what exactly causes this? Is it head trauma or like shock? Thank you in advance for reading my post