Hi I have three chicks around 4 weeks to two weeks old that are lethargic and puffy. They did poop and it looks normal. I have given polyvisol and gave them water with dropper. They do drink. I also cooked them mash made from oats, thier food, and mealworms ground up. They did eat. I'm scared to death something serious is wrong with my girls. They are the sweetest chicks and I don't want to lose them. What else can I do? Any help is greatly appreciated.