An abscess, such as from a dog or cat bite, sometimes may open on it’s own, but a feather cyst can continue to grow and get larger. I would probably lance it after disinfecting the skin, and then squeeze and explore it.
The scabs on the comb are definitely dry fowl pox, a limited virus spread by mosquitoes. Pox can be spread by disturbing scabs, or shed scabs. It usually clears up in about 3 week, and there is no treatment. I would dab a bit of plain Neosporin or triple antibiotic ointment into the eye, just to...
The lump on the face could be a feather follicle cyst, or possibly a tumor. You could try to lance it and get out the cheesy center and look for an ingrown feather. Here is a link with a picture of a similar lump:
https://bitchinchickens.com/2020/12/03/case-study-feather-follicle-cyst/
Yes those are pretty advanced scaly leg mites. I would bring her in and soak her legs in warm Epsom salts or soap water for 20 minutes. Try loosening scales with an old toothbrush or rag. Dry well and apply a good coating of either vaseline, mineral oil, Vicks salve, or Nustock cream every other...
Welcome to BYC and sorry about your sick hen. How old is she? Has she normally been laying eggs with hard shells recently? It sounds like she has a reproductive disorder. Dirty vents and diarrhea can be common. If you can get a good picture of her droppings that might be helpful. Do you have...
How old is she? This looks like the hen you have posted about a couple of times recently. It was hard to tell if it was gout or possible mycoplasma synovitis. Is there any way that you can have someone hold her upright so you can get a picture of both legs and feet standing? She sounds rather...
Breast blisters or keel abscesses can occur basically like a pressure sore on people. She may be lying down a lot on bedding that is wet or soiled, or she might have a rough roost. If she is lying around a lot due to not feeling well, that may be the case. You can apply povidone iodine/Betadine...
I really hope that it is not ILT. ILT is a virus, and antibiotics cannot cure it. Some cases are milder than others, but it is contagious. Could the blood be from injury or pecking? University of Guelph has a necropsy lab and testing available.
https://www.uoguelph.ca/ahl/services/necropsy
Yours has no long tail feathers or saddle feathers yet, so I think hen as well. Here is a guide on telling a rooster from a hen:
https://grubblyfarms.com/blogs/the-flyer/how-to-identify-a-rooster-vs-hen?srsltid=AfmBOoqYxcliHZVMeK1hdeRmv2zLldu-caTbR91AUpYc4_nyRrhmYjmf