Sorry if this is TMI, but: Some of my chick's droppings are very wet and slimy (YUCK) and some of them are normal-firmish. So I'm wondering...what is normal? Is this supposed to be happening or is there something wrong with my chicks? Is there something I can feed them to fix this? All they eat right now is their feed and water...no grit, no other supplements. Thanks for the help!