Serious poo problem

That does not look too healthy to me and maybe a vet visit is needed.  Sorry I cant be more helpfull and hopefully someone will come along soon who knows more than me to give you some advice.

The bulge by her vent is likely to be her preen gland and this is normal. I would stop all treats and only feed a complete feed. At 2.5 years she should be on  layers not chick food which has a much higher protein content and more calcium. It is hard to tell but in the poo pic is that undigested veg? You could try her on somepro-biotic yogurt - not a lot - just to reset her system.

You do need to wash her bum as she could get fly strike - where flies lay their eggs, they hatch and will start to eat your chook. Sorry I know that sounds gruesome but it is gruesome especially for the chook.

Have you wormed her?

Thanks for your comments! I do normally have her on layer pellets, and they always have oyster shell available. The reason I've had chick starter there for her (she's not eating it) is for the higher protein and calcium - since she isn't eating, this will give her more nutrition (I read this on another site).

I will give her some yogurt as soon as I get home. It's not undigested vegetables, and there are no worms in it, but I will go get some worm medicine today and give her that. I do keep her washed up, she gets this way almost every time she poops, (which isn't very often now, because she isn't eating) and I wanted to get a pic.

Last night she actually looked a bit better, her comb had a little more color, and I left the cage door open and she came out and walked around the house for about 20 min. She'll "talk" a little, but still isn't eating or drinking much.

One other thing - there is no smell to it. Having her in the house, I keep expecting to start smelling chicken poop, but even when I'm right down there with her, there is no smell.

Thanks again everyone!