i got 4 Silkie last week (9 weeks old)and today I got 2 more (11weeks and 13 weeks). The new ones even though older are a lot smaller like half the size as I believe they are a far better quality than the newest. The 9 week chicks are pecking at the newbies and one picked the littlest up by its head feathers. I have put up a divider in the run and put the 9 weeks in there. I really don't want to put the 6 together in the coop for the night for fear someone will get really hurt. How long will it take for them to get use to each other.