I have 2- 6 month old hens and 10 -4 week old chicks. I live in Ga, nice sunny day thiught I would take the chicks to the run and let them play. I stayed with them. The 2 older hens seemed very interested in the chicks. I have a large run so they can clearly stay apart, but the large hens came over and pecked 2 of the chicks very hard. I had a stick and the hens tried very hard to get past the stick to get back to the chicks. I'm scared when its time to put the chicks out the hens will kill them. I am new to chickens ( not since childhood) and don't know if this is normal. I don't have any way to keep them apart other than putting the hens in a dog crate until the chicks grow. Will they stop and settle down. I am soo worried about my babies. I love them far to much to have them hurt but the hens. Can and do older hens kill chicks? It seems like the chicks skin is so thin that a hard peck could go right through.