I had to put down my 4 year old Ancona hen this morning due to severe prolapse. I'm just wondering what could have caused this. About 3 days ago she disappeared. I thought she was a victim to a predator. Then yesterday she shows back up, but I notice she's pretty lethargic so I put her in a pen by herself. She seems ok besides having severe diarrhea. I give her food with VetRX mixed in and water with ACV and probiotics. I never saw her drink, but she did eat some. She was even preening herself. Then this morning she's shivering and her comb and feet are blue. I then noticed she couldn't stand up and lots of her intestines are hanging out. Not just a little prolapse, I mean A LOT! I noticed some worms near her vent yesterday, but no signs of prolapse. What could have done this much damage overnight?