My hens are a year and four months old. Our friendly, sweet buff Orpington stood with her head in the corner all day. She's stopped eating and drinking. Her comb and wattles are bright red. She has been a good layer until a month ago, then stopped. She began laying again last week but her eggs look different; bumps with slight reddish tint on the end. When we turned her upside down, she shows a lot of watery, yellow discharge. There is a piece of something (like cellulose, not like an egg shell) coming out of her vent. See picture to the right of vent. When I gently pulled on it, the inside of her vent began to come out so I gently pushed it back in. Is this a prolapse? What can I do for her? Should I get antibiotics for her when I go to town tomorrow? I know it is dark for most of you so hope you can spend a minute to advise me. Many thanks.