I just recently got my first chickens, and they are about 4 weeks old. I had 15, but today I gave 5 of them away to someone, and now two of my chickens have started aggressively pecking each other. They never had aggresive behavior to each other until today. I would assume this is their “pecking order,” but their faces are red and bloody. Nothing online has mentioned baby chicks bleeding from a pecking order, and I’m really worried that they will end up killing one or the other. What should I do???