I currently have 1 coop with 15 hens and 1 rooster. Our second coop has a mom, 4 chicks (3 of which may be roosters), and 6 four month old roosters. I want to seperate the older roosters but I don't know where to go with them. I was thinking of making a tractor for them, but what about winter time? I live in southeastern Iowa. Could I leave them in the tractor all winter?