For reference, my hen was lethargic, standing still (but not the penguin stance) eyes mostly closed, I had to squirt water with electrolytes in her throat, she wasn't eating either. This lasted 3days until she started to turn around. Her poop was also discolored and runny. After the shell-less egg she laid 2 soft shells then stopped layin for 8wks through moulting. It was a surprise moult because she was sold to me as a 22wk old pullet, I was told she is a Redstar. Anyway this is just what I remember from the event for your comparison or analysis.