Any way you can get a sample of poop tested?
The little scab on the foot and comb are probably from a peck by another chicken.
Her having no interest in food and only wanting to drink is very concerning (along with the continued sleepiness).
I wonder if she has a blockage somewhere since the...
Well, no I don't think there is really an article that tells how to do that.
You would want to glove up and lubricate the vent slightly, you can use a little mineral oil, vaseline or personal lubrication, something like that. Insert the finger about 1-2 inches. An egg of course would be hard...
Glad she is a bit more alert, but the sleepiness is very concerning.
Do what you can to keep her going, the egg was a good idea.
Just to make sure - you did perform an internal exam to see if you could feel for an egg?
I would only use the Corid at this time.
After you finish treatment, then add the probiotics and electrolytes for a few days.
Try to get as much Corid water into her that you can. I would also be inclined to give her a drench (direct dose) of Corid. This is in addition to her drinking the...
The Corid will not hurt her, it's a Coccidiostat which acts as a Thiamine blocker that starves the Coccidia protozoa.
If you treat her with the Corid, then eliminate the electrolytes if they contain B1 (thiamine).
Dosage for Corid is 1 1/2 teaspoons Corid powder or 2 teaspoons of 9.6% Corid...
Do what you can to get her hydrated.
That stance and not pooping much makes me think she has a reproductive problem or possibly a blockage somewhere.
The puffy appearance...not feeling well, hunched up same thing, but then I think Coccidiosis for some reason too.
The poop photos, the urates...
Has she pooped yet?
Photos of her whole body, plus how her neck looks when you have time.
Is the crop empty, fully, sour smelling?
How does the abdomen feel - bloated, swollen, fluid filled?
At 20wks and an Amber Pullet - has she started laying eggs yet? Have you inserted a lubricated, gloved...