Sick chicken - colorful poop

[HereForTheChicks]

Four-year old looks like she's going to die this week. Wondering if anyone can guess why with this picture of her poop. Thank you.

 

[Wyorp Rock]

Four-year old looks like she's going to die this week. Wondering if anyone can guess why with this picture of her poop. Thank you.View attachment 4223879

Do you have photos of her?

When was the last egg?
Any lice/mites?
When was the last deworming?
Have you given any medications, supplements or treatments to see if she will improve?
What's her crop like?

You don't mention any symptoms except that she looks like she's going to die. Can you give more details?

First work on hydration giving sugar water or electrolytes, then offer wet mushy feed.

The poop is not normal. Whether it's reproductive or some other illness/condition it can be hard to know.