I have 2 new baby hens that are about a month old. When I got them the feed store by my house said we could introduce them to the rest of the flock in about 8 weeks or when they are the same size as the others. We already have an outdoor pen for them so they can see each other. And also someone has already suggested to me to introduce them at night. Any other thoughts of suggestions? Also, one of my concerns is the feed. How can I still feed the young ones their starter food and the older ones their laying food? Can I mix it together with the laying feed for all of them or is that bad for the youngins? Any suggestions would help greatly. Thanks!