Please help! Prolapse Duck Vent?

[daisychickiemama]

Can anyone recognize what’s going on with my mallard duck? She has a sack hanging off her backside that is a little red on one side, other than that it looks like a sack of poop? She was still drinking and eating this morning. I have separated her except for her closest companion. Anyone have any advice or know what this is? I’ve never had any of my feathered girls have anything prolapse before and she is my very favorite as I have hand raised her. She is 5 years old which certainly isn’t old for a duck.

These pictures aren’t the best. But hopefully they are enough to get an idea. She wasn’t really wanting me to get too close this morning.