Hen not eating; no symptoms ):

[Kneedles]

The titular hen has only improved slightly over the last three days, if at all. She still eats nothing but seeds, and she sits down as soon as I stop nudging her to move. Unsurprisingly, she was not interested in soaked pellets. I have also noticed that one of my other hens, which is of the same breed but almost a year older, is also starting to slow down and eat less. I think that she is also moulting, but I need to check.
I wish I could tell whether these hens have contracted something bad or are just being hit hard by the cold weather in conjunction with moulting. I have yet to come across any droppings with blood or yolk in them since this illness started.

 

[Eggcessive]

As long as you are giving vitamin with electrolytes in some fashion, I think all you can do is wait and hope that she is eating something. You could tube feed, but I would not do that since she is able to eat if she wants to. My chickens do not eat much when they are molting, and they are more aloof.

 

[Kneedles]

I think that both hens are now more healthy than they were last week, thanks to the antibiotics, calcium citrate, and pedialyte. This will be my last post about the subject unless one of them has a sudden relapse. Thank you to everyone who gave advice and support.

 

[henhubble]

Sorry, but I am not able to take photos of her right now.
I think that she last laid an egg three weeks ago.
I saw her produce one dropping yesterday; it was normal-looking but very small.
I have now had a good look at her nostrils, ears, and throat; they all look normal.

You said she seems to have trouble keeping seed in her beak. Maybe putting some apple cider vinegar in her water might help? Cinnamon is supposed to perk up the appetite.
Could there be some fungal or bacterial thing wrong in her beak?
good luck