NorthernHomestead
Chirping
The friend is 100% aware of his behavior. He would likely not be there to stay. Which is why I have a hard time with the decision. Its like sending him to death row (but with actual death). But I know you don't want to have chicks from him because it can carry to them.
I won't lie I have sparred with him, ignored him, clapped, yelled, puffed up, tried treat training, etc. You name it I probably tried it.
Did you grab him and throw him? They're not humans, they're chickens. Not terribly smart. He needs to know the pecking order and that humans get the top roost. You feed him and take care of him. He may be testing boundaries. Rightfully so, we're bigger and may eat him (you don't, but I have). Let him know you get the top roost. If that doesn't work, rehome him.