The chick is energetic its running around with the others. The intestines are flopping around..i'll follow the advice and cull but I'll give it some time. Thanks
If you an stomach it you could gently and carefully try to tuck the intestines in and use liquid stitches. If it it otherwise eating and drinking it could make it. But I am an optimist.
If that is loops of bowel they need to be pushed back into the abdomen and either a stitch or a sticky band aid/steri-strip used to keep the skin edges together. Otherwise the bowel will dry out/get dirty and become gangrenous. This should not be hard if done ASAP.
If it is yolk sac (I don't think it is) the chick may be OK as it will dry up and seal itself off.
Hope that helps.
I had a less severe case of this with a duck, we very very carefully tucked them back in and applied a band aid bird healed up fine and lived a long life.