Wet litter may harbor Botulism. I had 2 hens with symptoms, lost one before I knew what it was. The other, I cannot remember what I tubed her with,water, with? NO eyedropper--must tube the bird, but she recovered very soon, and I learned about wet litter around the waterers. Cleaned it up and dried the area, now if water is spilled and area around is wet, I have scooped ALL wet litter away, hung a 100W bulb over the wet floor area until DRY, added new dry litter. Fortunately, it is not common! And with vigilance,And placing the waterers in a raised wide board, I do not have wet litter around them and have never had another bird infected. Good luck.