Great discussions this week

Nice pics COChix! No clue about your mystery chickens, I guess as long as they lay well and are easy keepers, it probably doesn't matter?
Maggiemo, Ashdoes and Wendell did such a good job of explaining his system I have precious little to add, except to say that I live with someone who treats every living being as a pet, and cannot wrap his head around processing any bird that has ever lived at our house, even though he logically understands all the reasons it is infinitely preferable to store-bought chicken. The older he gets, the more emotional attachment he develops to creatures in our world.
That being true, when a bird has to be culled, I try to sell or give to someone who will use it. I currently have a gorgeous but dreadfully cross-beaked Lavender Ameraucana cockerel who will ultimately have to be processed. I have tried to give him away for 2 months, and no takers, so he will go to the swap in Brighton this Sunday. I can't justify the care, food, and space he requires - he isn't able to mount a hen, so I know his genes have not been passed on, he is a very friendly bird who sometimes leaps into my arms when I'm bringing around their evening meal, but he serves no purpose. We already have a few that are pets, and I don't have room, time, or resources for another.
I've been spending quite a bit of time examining what I have and what I want to end up with as we tick off the days of summer. I think it's the time of year we all do that. Sometimes I decide to sell a bird because no matter how nice it is, I just don't care for the temperament - if I don't like living with it, there's no point having it. It is one of many reasons my flock is ever-evolving, as is true of many keepers. Even when I agree to take less than the actual value of the bird, which happens often, if it is going to a great home or a humane processor, and I no longer have to feed or care for it, it is sometimes the best I can achieve.
For some it may seem harsh to view a flock through the lens of effort and cost, and to those people I apologize if this conversation has offended you. For me, as others have stated, the birds are mainly livestock, save the few that are pets. A pullet/hen that lays poorly is no good to me as a layer nor as a breeder - I don't want to perpetuate poor production in any breed, and for a layer I'd be further ahead to keep extras I don't need in the breeding pen that are nonetheless nearly as good, in case something happens to the better ones. Anyone who's had chickens a bit of time knows, things happen.