I think there's a difference between debeaking and "trimming." I started with 5 hens in ample space and at one point, "someone" started the pecking. I think this is what chickens do. It became a problem ONLY when blood was drawn. Then it became almost cruel to watch the hens go after the bloody...
I've read so much about chickens that peck at each other and ways of tending to the victims; the hand-made vest over the wound was way out there!
It makes more sense to me to deal with the overly aggressive chickens than to be doctoring a coop full of victims.
My peaceful flock enjoys a...