Prolapse / intestine

[Wyorp Rock]

Very likely an egg membrane.

What do you feed including treats?

I'd give her 1 Calcium Citrate tablet once daily for a week.

 

[New duck mommy 2021]

I had something similar with my duck last week
Mine did have a slight prolapse but the thing hanging out was Dried poo that must have froze first.
I gave mine 4 baths and 4 warm water cloth soaks and we were able to get a bunch of it off. Then the vet was able to sedate her finish cleaning it up and put the prolapse back in and it’s been fine since
This was a picture from my girl and looked a lot like yours