Why is a hen trying to kill her 6 wk old ? I have Lavender Cochins and raised them last summer. No problems. Now, I have a hen who hatched only 2 chicks in May. The chicks are approx 6 wks old now & still with mom in a cage of their own. I tried mixing them all with the pack last week and they were chased and pecked on by the older ones ... so I put momma hen and her 2 young back in their nesting pen. Today, mom hen began pecking and jumping on one of her chicks. The chick is now a good size, so it has been able to get away from her and run and hide under the sleeping box. I was afraid she was going to kill it, so I removed mom from the pen and put her back with her crew she use to be with .... but her crew chased her badly and pecked on her ..... and it is in the high 90's here today. She was panting badly and so very hot ..... so I thought she might stroke out on me .... so I brought her back to the pen with her 2 chicks ..... and after a few minutes of resting in her pen, she began to attack the one chick again. The chicks are about 6 wks old now. I had to remove the hen again. I put her in another large pen with one Roo and one hen. The Roo likes her ... the hen does not. Now momma hen is the one being chased and pecked on ... but not too badly ... the hen in this pen is a sweet girl and she is not hurting the momma hen too badly yet. I am going out now to check on them before dark ... I will return to check on your replies.