I have 4 older chicks and 2 young chicks. I really need them to learn to live together asap. I was planning on putting them together when the older ones are 13 weeks and the younger ones are 4 weeks. But I haven't gotten the bigger coop built and probably won't be able to finish it in 3 days. So I'm wondering if I could put them together, but just put a cardboard box in the coop with a small enough door that the little ones can get in but the big ones can't. Will that work? If I find a big enough box then I'll put food and water in there so they don't starve or anything because of the big girls chasing them away. They sort of have been "free ranging" together, but that's more like they are 2 different flocks and the aren't even near each other except when the big girls decide to chase them. What should I do?