I have a mixed age and breed flock. I have an EE that is no longer laying (no green eggs). I also question who is laying my 2 eggs a day. As my older girls are not cuddly, I don't feel attached to them. I don't want to keep them as pets, so I am thinking soup pot. I want to plan ahead for getting new chicks when the younger girls get older. My question is how old do chickens stop laying?