My 1.5 year old black sex linked hen Delia hasn't been acting like herself the last couple of days. She kinda stands off by herself and although she eats, it isn't with enthusiasm. I checked her butt yesterday and there are almost no feathers on it. Today I checked again and there looks to be egg yolk dripped out of her vent. Yesterday I noticed some egg yolk on the poop board, but I thought it had been a fart egg that exploded on contact. Could she have a broken egg inside of her? If so, what can be done about it? Anything else that could be going on that you guys can think of? She is alert and walking around. Her vent is closed and appears normal (to me). Thanks!