Can a chick have a stunt growth?? I have one that just doesnt seem to be growing as much as the other ones. I had to give her tylan a while back for a sneeze but would that cause a stunt growth? They get regular chick feed, mealworms from time to time, safflower seeds and putter around the yard for bugs. She about 8 weeks old I'd say. Here is a pic of her with her "sister" She is the dark brown one.