My chickens are in a heavy molt. I noticed that they were eating less over the last month since they are molting. The feed has not been changed, smells and looks normal. Some of them are skinny and three of them have a watery diarrhea of normal color. They have been dewormed regularly, latest with Ivermectin pour-on almost 3 weeks ago and again on Thursday. None of them has any mites or lice. I have mixed in yogurt or apple sauce with the crumble and they finished it, but still diarrhea. I alternate ACV with Electrolyte/ Vitamin water from day to day. No improvement. I used to add a handful of cat food or calf manna to their diet, but stopped that, when I noticed the diarrhea. I do not know what else to do.