Just got my chickens today from MPC. At first I thought this girls neck was wet from drinking, but now that I've been with them for a few hours, I realized something is wrong with her neck. She is missing feathers - exposed skin and the feathers around the area are dried. It also seems like there is pus/moisture. Any thoughts or what to do?? Should I separate her? The other chicks are not pecking at her. She is eating and drinking and moving around. Thanks!