I noticed today that my hen's face and comb are very pale compared to my other girls. I also noticed that she has a LOT of whit poo stuck to her and she is acting kind of lathargic. I did see her poo and it is brown and runny. They have fresh clean water available to them all the time but do you think she is not drinking? I just switched them from LAyer crumbled to pellets could that be it? Hmmmm anyone have a suggestion?