DE is not the best thing for mites, but UK doesn’t sell permethrin. Can you get ivermectin pour-on there? Could your vet office help to advise you? Liver (chopped) or poultry tonic with iron may be helpful to her.
Sorry for your loss. With her upright position, I suspect she had salpingitis and egg yolk peritonitis. The yellow urates in the droppings are common with that. If you still have her body, and would like to do a home necropsy to take a look at her organs and take pictures, that could help us to...
Be sure to get super B complex vitamins which contains all B vitamins, including riboflavin which helps with leg issues. Here is one for a good price...
Scratch has low protein, only 7%. I would only use it very rarely as a treat. All flock or flock raiser feed has 20% protein, and can be used to increase the protein, as long as you have a little crushed oyster shell for extra calcium for layers. A little scrambled egg bits tossed to each of...
Can the chick move it’s neck the other way? It might have wry neck (torticolis) which can be a sign of a vitamin E or B1 thiamine deficiency. Does her neck feel firm or puffy like air under the skin? I would get some Poultry NutriDrench or Poultry Cell vitamin tonic, and five her a couple of...
It would be best to see an actual picture of your chicken. Terramycin has become hard to get without a prescription or vet. I have used plain Neosporin/triple antibiotic in my chicken’s eye. Some people who have cataract surgery may have some leftover antibiotic ointment.
It looks like feather picking. Others may do this to her while they are hanging out or on the roost, or she might be doing some herself. Overcrowding, bullies, boredom from not getting out to roam, or too little protein in the diet can be causes. What are you feeding? Look over her skin under...
Arteries would be deep. This should be able to be lanced on the surface, and using fingers to squeeze or manipulate out the material. I think that you will do fine. Pressure for several minutes will usually help the blood to clot. Most feed stores have disposable scalpel sets if you ask for them.
Be careful visiting a friend’s farm who has had Mareks. It is spread in feather dander and dust, and may last in the area for years. The best way to get testing is a necropsy on a chicken by your state vet lab where they look for tumors, and do feather shaft testing. Other testing can be done by...
I have only seen feather cysts online, but that is probably what it is. It may contain a mixture of sebum (oil,) skin, and feather material inside if you remove it. Here is a video of a vet removing 2 of them:
You know that is an injectable cattle antibiotic that is given once into the back of the neck or into the breast muscle, and if needed, repeated in 3 days? Some do try and use that orally, and that is a pretty small amount to give orally. I would hold her in my arms, pry the beak open and...