I have 2 hens that have 2 babies each so far. They are both setting on more eggs but I may only give them another day or so before we all give up on the eggs. I didn't really plan for this so right now the hens and chicks are each in plastic dog crates. I'd like to get them integrated with the flock. Is it probable that the hens will look out for their chicks and that this will work out? How old should the chicks be before I let them out. I was thinking I would leave the dog crates open and let the hens decide to come out on their own after a certain number of days. The crates are in the coop. thanks!