I have five, twelve week old chicks. They are on starter/ grower feed. It has bits of cracked corn and they have grit mixed in with it. They are free ranged every day, and occasionally get meal worms. Recently they have been having liquidy brown poop with white bubbly pee (I think). I am concerned and hope it is nothing serious. I will be able to get pictures of the droppings in the morning. Has any one else had this problem? If so please give me some advice.