Any ideas what this could be?

[missycola]

 

[Wyorp Rock]

Can you post some clearer photos and tell us where on the body this is located?

 

[missycola]

It's on her neck and just under the edge of her wing. The pics are clear when I send them. One looks like a piece of corn, the other one has opened and is also yellow. No oozing.

 

[missycola]

I will try to get more pics tomorrow in the light that maybe can be zoomed in on.

 

[missycola]

Here are some more pics. The one on her neck seems to be getting better.

 

[Wyorp Rock]

@dawg53 ?

 

[dawg53]

I've never seen anything like that. The closest I've seen that it MIGHT look like is fowl pox. Use a q-tip to put iodine on the lesions, do that for about a week and see if it shrinks them or clears them up. If not, try neosporin.
Just for heck of it, open the infected birds beaks/mouths and see if there are any lesions. Please let me know if you see any.

I've read some of your previous posts and it sounds like you're dealing with a virus, or possibly a fungal infection. Check the inside of your coop for any fungus or mold growing in the corners of the walls, especially on the east and north side of the coop. Ensure your hay isnt moldy and change soiled bedding often. Also algae in waterers can be deadly to chickens. Mold inside feed sacks are a problem as well as the feed, it is deadly. If you see clumps or balls of feed in the sack, it means that the feed was wet at one time and it dried out. Return the sack of feed and get a refund or swap it out. Check dates on feed sacks as well.
Besides fowl pox; a common respiratory disease that passes through a flock quickly is Infectious Bronchitis (IB.)
This could be the reason why the tetracycline and especially the tylan injectable was ineffective. If it were a bacterial infection, you wouldve seen improvement by day three using the tylan, particularly by injection. Antibiotics are ineffective against viral diseases.
Depending on the strain of IB, if that's what it is, you'll have to let it pass through your flock. The same is true for fowl pox.
If there's a way that you can get your sickest bird tested, I highly recommend it. Consider contacting your local extension agent and find out how to go about it.
Here's an excellent link for you to read about Infectious Bronchitis:
https://www.shagbarkbantams.com/infectious-bronchitis/

 

[missycola]

Thank you so much! I keep their food in a metal garbage can, change their water daily with a cap full of Apple vinegar. Their bedding gets changed every night. I'm going to move their coop to a new spot, maybe that will help but they have had this before they were in this location. Thank you again for the help. I will check into finding someone to test. I have no vet locally.
The lesions are getting better and I don't see any more. It's just on one chicken.