Encourage her to drink the Mixed Corid Water. If she's not drinking well, then you can give her a direct oral drench of undiluted Liquid Corid at a rate of 0.10ml per pound of weight twice a day for 3 days.
This is in Addition to her drinking the Mixed Corid water throughout the day or you...
Do you see any lice or mites on her?
When was her last egg?
What do you feed, including treats?
What's her poop like?
Photos?
I'd check her crop to make sure its emptying overnight, make sure to look for mites/lice. If she's not laid eggs and should have, start her on 300mg Calcium Citrate+D3...
How old is she?
Has she been having any difficulties with egg laying or shell quality?
I agree, I'd treat for worms. The Toltrazuril is a good idea too.
I see quite a lot of mucous and urates, some bubbles and perhaps intestinal shedding. If you see any more of the material I have circled...
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How old is she?
Do you have photos?
The crop is not emptying, you'll want to address that symptom according to the article below.
Feed her some wet mush feed and try to get the medications into her the Vet Prescribed.
If she's not been laying eggs and should have, then I'd...
I'm sorry about your hen.
Sounds like you have a pretty good plan. Spraying with Vetericyn and apply ointment to keep the tissue from drying out is a good idea.
Are you also giving extra calcium? If not, I'd at least give that until you leave.
I would not keep a hen with a prolapse in...
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I'm sorry about your Duck. I don't have any of them, but this is the info I have saved for your situation. You may want to read through it while waiting for the Duck Experts to chime in.
If you can also provide photos since the tissue seems to be damaged or dying, this may...
I'd give both hens the dewormer, it won't hurt them, then repeat in 10days.
If I need to deworm, I go out early with my preloaded syringes. Take a hen off the roost, dose her, then put her in the floor or maybe in open the pop door and make her go out into the run.
Maybe you can coral/pen...
Were you able to get more photos?
If this is under the Vent, then likely its Flystrike.
Continue to care for it like you are doing (wound care, checking for maggots too).
If it's the Vent itself, is she able to poop? When was the last egg?
Care for the Vent by keeping it coated with...
If these are from yesterday/today, then I agree, it still looks like she has sinus infection.
If you look inside the beak at the roof of her beak, is the choanal slit clear of mucous or debris?
Have you looked inside her beak for any obstruction, canker or lesions?
Have you ever had respiratory illness within your flock?
It's hard to know what's going on with her. If the crop has been emptying for 4days prior, the crop now being slow is a symptom of whatever underlying condition...
A change in feed could cause some different poops until they get accustomed to it.
I'm not sure what you'd do to boost immunity. Fresh water, fresh nutritionally balanced feed, oyster shell, grit (crushed granite) and the occasional treat if they are cooped should be all that's really needed.
She looks like she feels very poorly.
The poop doesn't look good, it looks to have yolk and/or albumen in it. She may be suffering from a reproductive issue or is having shell quality issues or hard to know.
I'd start her on 300mg Calcium Citrate+D3 now, then once daily for a week.
Corid...
How much Calcium did you give?
I'd give her Calcium once daily for a few days to see if she's able to expel an egg or lash material.
Work on hydration, see if she will drink sips of electrolytes or sugar water.
What's her crop feel like?
Photos of her and her poop would be good.
Have...
Looks like a pullet to me.
Her feathers are being plucked and nipped. Check her for lice/mites and observe to see if she's plucking at herself or other birds are doing it to her.
A very bad odor along with lesions, mucous, etc. inside the beak may be Canker.
Treatment is with Metronidazole. https://www.backyardchickens.com/threads/breath-that-would-knock-a-donkey-on-its-ass%F0%9F%98%86.1671023/post-28747494