I will be adding 5 week old EE to my current flock. The EE have been raised in a garage. Can I put them out in the coop, seperated of course? They have feathered out. The lows here right now range from 35-47 degrees. Also, my current flock ranges in age from 30/35 weeks that free range, only in coop at night. About what age should the new ones be before joining the current flock? Thank you for your help!!