I have noticed my chicks in the grow out pen have normal looking poop besides some blood tinged colored mucus in it. It is slight, but concerns me. Do you think it might be worms. I dont think it is cocci because they are on medicated feed. They dont act sick what so ever. If it is worms, what would I use to de-worm 3 to 14 week old chicks? Is that even possible?