My baby chick was only two weeks old when she got sick. She was always sneezing with bubbles in her eye. We fed her medicine used o treat the bubbles we sometimes got from other hens. We separated her from the others chickens and fed her in a bread and water with medicine only diets for a few weeks. When she stopped sneezing as much with no bubbles I put her back in with the others. Then I noticed a huge difference in size. Can anyone tell me what is wrong? My entire flock is bantam chickens. (She is the smallest of the 8) -not ordered from online or anything.