Can I let two groups of birds free range together if they have not been integrated? I have 10 hens who are already free ranging in the afternoons because they started feather picking. They do really well. I have 4 hens and a rooster that are about 6 weeks younger. I have yet to let the free range as they have not been moved into the flock with the others. Has anyone had two groups like this and been successful with them free ranging together?