Since you asked....have the brooder ready. Can you hold 90 degrees in the brooder? Water will be readily available when they arrive? Feed is last after heat and water. Do you have bedding ready? I used pine shavings, but there are many options you can find if you search this site. Regarding...
I just want to give a different perspective. My Cornish cross don't just sit, eat, poop and drink. If you can give them some outside access, you would be doing yourself a favor. 15 birds would not need a huge space to roam around in. Check out these two threads for different perspective on...