I've been thinking about this, since I just started my flock and had a bad experience with a new purchase. I thought we could share what we cull/get rid of. I don't mean for breeding programs, but general welfare of your flock. I don't want this to be judgy, I'm just curious what everyone else does. I decided that I won't allow roosters or hens that injure other birds. That includes through rough mating. Along the same lines, any that are mean to people. Also, if a bird seems prone to illness. That's all I have on my list so far.