9 year old hen with pale comb, almost no tail feathers, now moving slow and less interested in food/treats

[Wyorp Rock]

Oh my, Goldie was not happy about those meds was she!
At least she has the energy to show her dissatisfaction.

Thanks for the poop photos. Yes...I'm always asking for them. First photo there's a lot of fibrous material, hopefully she'll get that out of the system and her crop will start to function a bit better.
Second photo. I isolated a spot of that below. Is that worm, shadow, flash, piece of straw...hard to tell.

Putting herself on the high roost is promising, as is eating and drinking some. I think you are treating the crop issue very well, I like to give coconut oil too in addition to the Miconazole.
Sounds like she's improving slightly or at least holding her own, that's what we hope for.

And yes! Her BFF must be included too - what's her name?

 

[BDutch]

9 pm update: She had put herself on the highest roost with the new kids. I put her on lower roost,

Please stop interfering. If you put your older hen at a lower roost, it means you don’t allow her to be high in the pecking order.
Your chicken know better than you, what needs to be done.

 

[FrostRanger]

If you freeze drops of the miconzole you can just drop them straight into her beak. Likewise if you have to give any kind of pill, just open her beak and drop it in. Works best if the hen has wattles you can pull on to make her open her beak but it still works if you can just otherwise open her beak (6 of my 7 birds don't have wattles)