All you can do is try,keep her warm,offer food/water. If other chicks are not pecking at her,then perhaps it might be best to leave her with them,less stress for her in an already stressful situation.I am so upset. Truly disturbing to see how awful it looks, I'm feeling like she's not going to make it
I just gave her a warm soak as suggested and was able to see just how bad it is. There is a very large area on her underside that is not just swollen but bulging out and it looks as though you can actually see her insides throbbing
she is in a separate brooder....