We got our shipment from MM yesterday and everyone seemed to be doing fine. This afternoon though I noticed we had a buff cochin with massive pasty butt. I used a warm papertowl and carefully cleaned as much as I could but it was really bad. Now the chick seems to be uncomfortable, almost like she is straining or something, standing up straight. I have medicated feed, removed sugar water, grit added this afternoon, shaving added this afternoon, not too crowded. Any other suggestions? TIA