Just throwing this out there....had the thought and need to search for information to see if it could be viable. Thinking outside the box. Wondering if a wood burning tool would work? Chickens may not handle the stress of a procedure, but would it be any more stressful than caponizing? We used to dehorn our calves until we started using a polled bull. Our friends with goats, debud them so their horns don't grow by burning off the bud. Currently I keep spurs in check by vigilant grooming on them. I don't have any injured hens. But we have friends who must use aprons on their hens or have had to treat injured hens.