Clear, liquidy poop with white chunks. Lethargic but drinking. Slowly getting worse since yesterday and none of the others seem sick. Feathers not puffed up. Protozoa, bacteria, or something else? Barred rock hen, age unknown. She is at least 2 years old. Molting slowly over the past month (new feathers growing in without bare patches first), with the exception of her head feathers. She has always looked like she's balding but now even more so. I will post photos as soon as she provides me with the opportunity.