I've wondered the same thing. I have one hen left over from a flock I started about 8 years ago. Most of the rest died of natural causes and old age. I have been concerned that if I get any new birds, she will attack them. She roams the yard and goes back in her coop all by herself at night. I would really like more but would like her to be happy about it and not attack them. And I really don't want to slaughter her, we've had her so long we've named her. Advice?