I hit a young hen on the head with a hammer. I had kept her very quiet and had stretched her neck forward, out on the ground.
I took the side of the hammer and SLAM hit her on her little head. .. she I am SURE didn't feel anything more than a terrible, quick headache. But her body did rear up and react. I hit her again and blood flowed out of her ears. I knew she was brain dead, But I could see her neck vein/artery pumping the blood into her head from her heart. It took about 30 seconds before that settled down.
The way I saw a pig killed was with an electric shock to the head... the heart keeps beating, but the brain is gone.
I wanted her brain gone, not knowing if really, wringing her neck would be fast enough. AND I couldn't wring her neck!!!!
It was not a nice thing to do, but my little Ann couldn't walk, her legs were useless and she had stopped eating. I just didn't want to have her starve and linger. She is buried with a little birdhouse ornament on her grave.
An ax to the neck may be easier. I may have to do it again and I may try that. I am not looking forward to it!!
Best wishes for this thing you have to do!