Thank you.
I agree that there is always more to learn.
The most important part of any science is to keep an open mind to learning more and an open mind to testing theory for positive results.
Peace :-)
Forgive me for not reading all of the previous 18 pages of this thread.
That said...
1) Always seek veterinary advice when possible, particularly with a vet that is trained in the medication you wish to use.
2) Always follow package directions, when possible, to assure best dose accuracy.
3)...
When due to worms, it tends to affect multiple hens in the flock.
The Original Post describes an isolated incident that is not spreading to other birds, I'd say not to worm unless directed to by a veterinarian; the description fits the "stuck egg" situation.
(I do have experience with nematode...
I don't know how often I'll be stopping in here, but I figured I might have at least a small amount of insight on some things that I can pass along from time to time, when I remember to stop by...
What is my background?
I have been raising poultry since 1986, taking the years of 2004-2011 off...
The images in the Original Post are not of Vent Gleet.
From my experience and the description provided, I'd say that bird is "Egg Bound".
(or as I called it growing up, "she has a stuck egg")
I know I'm getting to this very late, but I figured late insight is better than no insight... for this...