Soak 1ml of durvet into a treat and watch her eat it every morning!
I rescue ducks -- mainly abandoned domestic drakes and feral muscovy ducklings that get waterlogged and separated from their mama. I got two juvenile pekins from under a truck in a light industrial estate at the beginning of...
Poor thin little girl: I'm so glad you took her in and are caring for her.
The reluctance to stand/ walk and preference for stsying in the coop where she doesnt need to move arund is certainly suggestive of niacin deficiency. Do use Durvet high level Vit B complex, 1ml a day until she is...
I used pyrantel from Tractor Supply
Overview Pyrantel Pamoate (pyrantel embonate) is a pyrimidine-derivative anthelmintic, used in poultry to treat internal parasites--specifically against large roundworms, Capillaria, and Hetarakis.
Pyrantel Pamoate for Chickens and Ducks - PoultryDVM...
You should find that soaking her feet in epsom salts for the bumblefoot will bring off hte dry flakey skin from her feet.
I have rescued ducks in poor condition but yours sounds exceptionally bad. Thankful you got her.
She needs quarantining from your existing ducks. Officially, quarantine...