Thank you for your response. The chick died shortly after I separated it from the rest, unfortunately. I do feel a bit bad I didn’t realize its size difference earlier; I may have treated it differently.
I have ten chicks at the moment that hatched right around April 3rd. One of them is acting in a concerning manner and doesn't seem to be getting better. I originally noticed her looking quite puffed up and not hanging out with the others last weekend. Since I have experienced having chicks...