I am going on week 7 with my cornish X raising them in fall in Wisconsin in a hoop coop - and so far am more than pleased. They are obviously more comfortable in the cool temps, they have fresh air constantly and have a clean coop floor every day. We ordered 20 cornish female and got 21 (they threw one in just in case). We still have all 21 (awesome, huh?) and raised them from day one in the "hoop coop". In the beginning we had them on a sheet of plywood with shavings and a heat lamp but pulled all that out after 2 weeks. Now I just move them every day onto fresh grass and give them food and water. We're taking them to a butcher in 11 days ($3.50 per bird to butcher). They weigh an average of 8# and will probably gain another pound or two yet. I don't have extra light on them, so they have daylight from about 6:30 am to 7:30 pm.