They're lucky to have concerned owners lol! I've been trying to get a video of my rooster dusting by the goats because he only does it when the goats are rolling on their backs. Every time I try to get a video, they jump up.
When I first started raising chickens, I thought mt rooster was dying lol! He was dusting. We have a real bad hawk problem so I thought the hawk got him and his nerves were causing the movement. I ran to him and he jumped up and looked at me like I had lost it.