I have two sets of chicks born 3 weeks apart. The newest ones are almost a week old, the older ones are almost a month. Right now they're in two separate brooders in my basement. Would it be okay to put them together in one brooder? I hatched out all the chicks from eggs. The older set of chicks 7 chicks: 4 cockerels and 3 hens The younger set:6 chicks- not sure of sexes yet but easter eggers and one RIR. With this cold weather no one is ready to go outside yet.