Molting takes a lot out of a bird. My flock gets tired, low appetite and even some loose stools, (most likely because they are eating less and drinking more). They also can become a bit more shy than they normally are. I find that adding some probiotics to the water helps keep the immune system perked up. Apple cider vinegar helps to increase appetites, and they get some meat a couple times a week to help with the feather growth.
You might dampen their layer feed to help coax them to eat more as they need a balanced diet more than ever during a molt. Once your birds get thru the molt, they should return back to their old perky selves.
