Prolapsed intestine?

by Barry
(Rosewood, Qld, Australia)

I am currently handraising some young birds. Last night at feeding time, I noticed a long bloody protrusion shaped like a thick worm about 5 cm long coming from the back end of one baby rosella. It was off it's food yesterday, and the protrusion only appeared last night. We put it in a warm hospital brooder, but it died sometime in the night. I'm just wondering if you have any ideas as to what may have caused it, and what exactly it is? It looked like the intestine was prolapsed. The baby birds are being crop fed 'Roudybush' handrearing formula through a sterile tube syringe.It has never happened before in my experience. Thanks