My silkie hen had been sitting on a clutch of eggs for quite some time. Only one ended up hatching out about three days ago. I was just able to get to the farm store today where I bought four more. I slipped them underneath the mama and all was well until one of the new chicks came into her sight (different color than the chick she already had). She stared at the baby for a few seconds, growling, and then pecked her. I picked the baby up and put her back underneath the hen. She is sitting nice and wide, keeping them all warm and not trying to harm them while they are under her. Has this happened to anyone else? Should I leave them under her and hope she takes to them? Any tips/advice? Thank you!