I really can’t answer that. If it were that simple, sour crop would not be so difficult to treat. @casportpony have you tried aspirating material from a sour crop, or flushing one and has it worked?
The injured chicken needs to be separated with food and water. Treat her for shock by offering some sugar water or electrolyte water up to her beak. Later wet chicken crumbles and egg can be offered. Saline can be used to clean the wounds, and antibiotic ointment or chlorhexidene cream may be...
It looks fowl pox a virus, spread by mosquitoes. It lasts about 3 weeks and most recover. I would flush the eyes with saline or eye wash. The apply some antibiotic ointment twice a day. Don’t disturb the scabs so you don’t spread the virus.
We cannot the video. I have seen hens walk backwards when they were molting. Sometimes it accompanies wry neck symptoms where they can walk in circles, backwards, or have a twisted neck up down or to the side. Vitamin E 400 IU along with 1/2 tablet of B complex, can sometimes help. To help her...
What is your general location in the world? Do you have any veterinarians where testing could be done? To me the lesions on the comb look like healing pecking injuries. They may appear black, then yellowish brown and later white. Have you checked the ears for any yellow discharge or checked the...
Is the feed dusty, or are there any environmental irritants that may be irritating the nostrils? Look for any debris blocking her nostrils. Has the chicken been near any new or sick birds. Any new members if the flock just added? Look for any bubbles or foam in one eye.
It will eventually fall off, but you could carefully trim some of the edges. Once all bleeding has stopped after a day or so, you could drip some saline or apply a warm wet compress to it for a couple of minutes and then remove it.
Do either of her hock joints look swollen? Mycoplasma synovitis can cause swollen ankles and hock joints. She could also have injured the foot. Can you place her back with her flock in her crate? It might be hard to reintegrate her back with her flock if she is kept away from them longer. Gout...
Do you see any bubbles in either eye or swelling around her eyes or her face? I would use a couple of drops of hydrogen peroxide into the ear canal, massage, and clean it out with QTips. Then apply a little plain Neosporin or generic ointment into the canal, daily.
You can also use Tiagard (Tiamulin, Denagard) to treat mycoplasma respiratory disease, and get it here:
https://www.amazon.com/Aurora-TiaGard-Concentrate-Generic-Denagard/dp/B0B4T4Y9B1
Dosage is 2 ml per quart of water for 5 days.
Mycoplasma or MG is a chronic respiratory disease. Symptoms of...
You can upload a video to YouTube or a similar site, and that usually works. Make it public. It sounds like she could be dealing with a riboflavin deficiency, but Mareks or an injury could also be the problem. Do you have a rooster or cockerel or hens that could have injured her? Rooster Booster...