Did you ever get to the bottom of this ?I've added some vitamin c and pro biotics to the water today. I'll cut back on the morning sweet corn and greens for a while. They won't be happy but it is for the best. I'm going to worm them all starting this weekend after they finish a couple of days on the vit c. I've also trimmed some fluff from bums. It was getting really mucky. Poor little girls. They just sat on my knee and didn't move!