I rehomed one of my cockerels that liked to force my hens to mate (in mud holes, in a corner, on a rock ,it didn't matter). It wasn't so much what he did but how he did it. After I found an Ameraucana dead with her neck dangling over the edge of the dropping board I got rid of him.I suspect he pinned her down on the edge and suffocated her or broke her neck. A place on her lower back had the skin rubbed off but didn't have any blood on it(she already had feathers missing on her back)It appears he mated her even after she was dead and why the wound wasn't bleeding