My had four chicks hatch in the incubator. The last chick took a really long time and is pretty weak compared to the other chicks. I left it in the incubator all afternoon and evening, but just took it out and moved it to the brooder. Now the older chicks are pecking the little chick. I put a piece of cardboard in the brooder to separate them. What else should I do? I hope he is a little stronger tomorrow and can hold his own.