Hello, I'm very new to all this and just introduced a new 7 week old chick to my existing 5 chicks just before bedtime. The existing 5 are about 10 weeks old and from the same mixed bantam flock (so they have met before!). I expected some pecking but it seemed pretty brutal and the new chick was just sitting away from the others and didn't fight back at all. They've gone to sleep now and seems to be peaceful although the 5 are together in a nest box and the new one is outside the nest box alone. It's summer here now so I'm not worried about the new one getting cold. Should I be worried? Should I separate the little one overnight and reintroduce tomorrow? Any advice would be great, thanks!