So, this is our second round of baby chicks and I'm at a loss for what to do. She came home on Monday with pasty butt, I cleaned it immediately. Next day the skin around her vent appeared to be somewhat crusty, so I started applying antibiotic ointment daily. Three days later her belly or intestinal region is hard and appears to be bulging and she's noticeably smaller than her sister that she came home with. We have added a small amount of chick grit to the starter crumble, as well as a Electrolyte supplement to their water. Any input?