Thanks, Avian.
Although I couldn't butcher one of them myself, I do get that it's part of the plan and I'll do my best to see that he's happy and healthy until I can no longer keep him.
My original plan was 3 chickens, but when I read that you can't add just one new chicken to a flock, I decided to go with 4 in case one didn't make it. Then, I'd wait until if or when I lost another, and then always be able to replace with 2 chickens at a time.
I guess this is my first taste at chicken math? Where everything happens in multiples....