I have 13 chicks: 4 black sex links, 3 barred rocks, 3 rode island reds, 2 ameraucana and one white leghorn. This is my first time owning chickens. I mostly got them for the eggs.
We got 5 chicks a while back and love them. About a week ago we decided that 5 werent going to produce enough eggs for my family, so we got 7 more. The problem is there is about a 9 week gap in age. I am keeping them separate right now. My question is how close in size do they have to be until...