I have a hen killing her chicks as they hatch. There are still more that are yet to hatch, as other hens layed on her while she was brooding her own, and I have two just breaking now. should I remove them? I have a heat lamp, should I put them in a container under the heat lamp and should I cover the heat lamp? How do I make sure there is enough humidity? Help, I hate seeing her peck her babies to death.