Acres has a good point here. Sometimes what they eat will show up in their food, however, if the poop looks like raw hamburger, the best description I can think of, it is probably cocci, which seems rampant this year in spite of meds in the feed. And another good point...never panic! Assess everything, including their actions and the color in their faces. Cocci can actually cause a sort of anemia type look with very pale faces.