I live in michigan and its been in the 30s & 40s and i have 5 silkie chicks, 1 barred rock, 3 welsummer chicks, and i was going to put my large dog crate in the coop wirh straw for a while for the welsummers, they are the most rambuncious. The chicks are about 5 weeks old. The silkies are smaller and seem to chill easier and the barred rock has always been stand offish and quiet keeping its tail down. So i figure the BR and Silkies could stay in a bit longer and dont want them over crowded.Is this a good idea?? I have 6 adult chicken right now, but they arent mean. I put the wellies in theyre loose one day and they didnt care until the 3 chicks tried to get under one as if she was ma and they ran (adults) in the coop! Thx!!