Hi all, my sick bird Buttercup is a brown shaver, approx 20 months old (don't know weight at present sorry) She was a battery hen until 15 months old. Someone else owned her for those next 4 months then sold her (and some others) onto me. We have had her for 4 weeks. All of my hens do lay jumbo sized eggs at between 72 -78g each. She has been a little off colour for a couple of days, is not eating her laying pellets and grain but will pick at grass etc. She also likes to bask in the sun rather than move around a lot. Puffing her feathers up and appearing to keep warm although it's warm weather here is another sign. Her crop also appeared full this moring even after no food, so I wondered if she was not able to pass things out of her crop. Her bowel motions have been runny and yesterday afternoon appeared to be slightly foamy. Thinking she might be wormy I gave her some crushed sunflower seeds (can't get buttermilk here) and this morning was off to the vets to get some proper de-wormer. I checked the hen before I went and she had something hanging from here rear end, attached by a white tube like structure slighly smaller in diameter to a pencil. My first though was tape worm or some type of worm then I saw a medium sized greyish type sack and though maybe prolapse. I read up here about prolase and went out to wash the possible prolase thing to see if I could get a better idea what it was. I was not able to find a picture of a chicken prolapse so couldn't identify it that way. Anyway when I gently washed the thing hanging out it just fell off leaving the tube like structure still hanging out slightly from inside her.. So I have kept the hen separated her from the other hens. I have also taken pictures of the thing that fell off. Being very new to hen keeping I have no idea what this thing is. If this was a prolapse and it's just fallen away what will happen to her? Do I need to dispatch her so to speak? There is a blue pencil in the picture for size comparrison. This is the underside of the thing. There appears to be a hole that goes inside it. The greeny coloured part is just a bit of poo. Can anyone please help?