I just ordered 12 cornish cross from Ideal poultry. They are scheduled to ship on 10/31/07. Once they are big enough to take from the brooder how much space do they require per bird? I was planning on building a cage (I'm thinking approx. 3' wide by 8' or 10' long, 2' tall) in my current run which is 20' x 20' to keep them in. I plan to put a wire floor in it and keep them up off the ground. Will I need to put a roost in there? Is 2' tall enough? If not, how tall should I make the cage? Should I keep them in the cage with food all the time or allow them access to the run? Once they are feathered out how do they tolerate cold weather? This will be my first try with meat birds any suggestions or advice will be greatly appreciated. Thanks.