I have a full grown hen that went broody snd hatched 9 chicks. Every thing was going well untill today. The chicks are only about three weeks old, and when I walked in the coop yesterday I found an egg in her nest box. I didn't think much of it until today, when I found another egg, and that she was no longer protective of the chiks. She didn't try to peck me when I grabed one of them, like she used to, and later today I saw her pecking her chicks and chasing them around . The chicks are still very young and I don't know what to do about it, this has never happened before, and I've had many broodies throughout the years. Please help!