A friend was holding Midnight, a lone(until thursday) week old today survivor of a batch of black australorps, and Midnight squirmed out of her hands and into a three foot drop onto the floor. Now she won't use one of her legs. She is eating and drinking, and seems alright except she keeps that leg pulled up all the time. It looks like it might possibly be swollen, but that could just be me overreacting. What should I do to help it heal?