I am in need of input. I have a chicken coop and run that is the home of my 4 hens and 2 roos that are 6 months old. Inside the coop I also have a group of 9 almost 7 week old pullets which are safely inside of a large dog crate (which is quickly getting too small for them). I am wondering at what point would it be reletively safe to let the chicks mingle with the chickens. I am afraid to try it because I have heard stories about the older ones attacking and I do not want to loose in chicks if I can help it. So my question is....when would it be safe to let the chicks out to mingle with the older chickens?Is their a certain age? Any input would be helpful as I determine which step to take next and when to make it. Thank you.