I've been thinking about this as well... So far I haven't had to cull but I'm sure eventually all of us incubators will. I read on another thread somewhere that the vinegar thing is not actually very humane... Mostly it just makes us feel better because there is no blood. I HATE the thought of the hatchet but that seems to me to be the quickest and probably least painful way to go. I fear the neck breaking because I'm afraid I would hesitate and hurt the chick before actually getting the job done
