Ok, I have looked all over the internet and read different things. My wife and I have decided we want to try to raise some cornish rocks this coming spring. Before we get to spring though I would like to get everything set up. We are planning to get 25 in March and see how it goes. We are building a 4foot by 4 foot brooder. I figured that would give the chicks plenty of room until they are ready to be out from the heat lamp. From there we plan to move them to an enclosed pin as we are limited on our space. We planned to make half of the pin covered with tin for protection from the weather and the other half covered with chicken wire. OUr main question is how big does this chicken pin need to be to house 25 broilers until they are 8-9 weeks old? I would appreciate any help! Thanks!