hi everyone! New member here! I’d like to introduce myself by saying I have 4 lovely chickens. 3, 12 week old pullets (silver laced wyandotte, golden laced Wyandotte & a Delaware) and then a 9 week old Brahma pullet. The issue is, that the Brahma has had diarrhea for the past week (that I’ve noticed.) It’s a light brown color and smells! Any idea what this could be? Too much treats, not right food, worms, etc? And any ideas to help eliminate the smell it leaves behind? Thanks!