I started noticing a lot of watery poo and odd poo a few days ago. Haven't been able to determine the culprit. This morning when I went in the coop, there was a LOT of flat poo (from falling from the roosts) everywhere. I also found some of my chickens eating the very watery poo in the yard and many of them seem to be drinking a lot more water than normal. I have attached a couple of pics and could really use some help. Many of the girls are moulting. thank you.