Hello there. We have a problem. Last night when I put up the chickens I counted and checked them all as I usually do. They are all standard birds except for two mille fleurs we pay special attention to, Camo and Flague. Well upon checking the chickens last night Camo had a large "bubble" coming from her butt. She was also leaking poop from her vent while her butt was pulsing. I checked her face and her eyes are very dark black (from brown), her comb is now pale and her beak is very pale compared to the rich yellow it usually is. I isolated her from the flock and now she's in our dog crate on the front porch. When we brought her in we washed all the poop from her vent. The bubble shrunk back in by the time I had taken her from the coop to the house. We dried and dusted her with DE in case of mites (the chickens had red mites this past week and we treated them all with DE). We also put some honey on her vent just in case of prolapse issues. I placed her on a perch inside our dog crate on the front porch. She has layer feed with ground oyster shell and DE sprinkled on it and water with a dash of ACV. This morning her poop reeks horrible as it still leaks from her butt. The poop looks completely normal below the perch but she has not moved from the perch I put in the dog crate for her last night. Her comb and beak are still pale and her eyes are very dark. Camo is very "docile" to the point I would call it lethargic. Flague is usually the lovey and Camo usually "doesn't do human" so this is very unusual for her. Please help. Edit: I checked all the other chickens and no apparent issues in any of them.