I need help identifying what's wrong here. My pullets are about 9-10 weeks old and their combs seem off colored. They are kinda chalky looking. Then today I noticed the tiniest amount of blood next to this one's eye. It's so minor, she may have done it herself. Also possible that one of the others did it to her- they have just started spending the night in the coop. They haven't figured out the roosting bars yet, so they all fight over the corner most spot... I keep worrying that they are trampling each other! No other symptoms- they all seem happy and healthy, eating & drinking fine, and no bugs/lice/mites are present. I've added electrolytes and probiotics to their water. Anything else I should do?