So I bought 4 chicks at the same time and 1 of them isn't growing. She had some health issue a few weeks ago (lethargic/poor balance etc) that resolved after sulmet and vitamins. I tried yogurt (which none of the chicks were interested in) and also added a higher protein mash in addition to grower mash. I've also given some scrambled eggs, worms, and cat food for added protein. She is eating and drinking (and no longer showing signs of illness) but just isn't growing at the rate that the other chicks are. She does keep more to herself and is the friendliest with me of the bunch, but didn't think that was alarming. I'm new to raising chicks so any and all the help I can get I'll take!!!!!