Mites?

[dylanwitt]

Yes, it is labeled for use in both the coop and on the birds.
This photo is just one of many types of permethrin based sprays on the market.
There are a lot more to choose from.
I prefer this exact one because it is "ready to use" no mixing involved.
I do not buy it at TSC but it can be bought there:
https://www.tractorsupply.com/tsc/product/martins-horse-stable-permethrin-citronella-spray-1-qt

Okay, thank you! I take it then just apply where it looks needed on birds and the coop?

 

[Wyorp Rock]

Can you post a picture of the whole chicken

I see broken feathers, some new emerging feathers and possibly some areas with an intact feather shaft. The broken feather and those areas with an intact shaft will not have any new growth until your hen goes through an annual molt.

The new growth, time will tell if those are rubbed off on the roosting bars/nesting boxes, plucked out by another bird or if they will grow on out.

What type of of roosting bars do you have? High production birds are prone to having some bare spots from getting into/out of nesting boxes. Observe your girls for signs of picking on each other, especially during roosting time.

It won't hurt to treat them for external parasites. I agree with @KikisGirls that you should use a Permethrin based poultry spray or dust for treatment. Remember to clean out bedding and nesting boxes, treat those as well. Follow the directions on your labels, but generally you will re-treat birds and housing again in 7-10days.

 

[dylanwitt]

Can you post a picture of the whole chicken

I see broken feathers, some new emerging feathers and possibly some areas with an intact feather shaft. The broken feather and those areas with an intact shaft will not have any new growth until your hen goes through an annual molt.

The new growth, time will tell if those are rubbed off on the roosting bars/nesting boxes, plucked out by another bird or if they will grow on out.

What type of of roosting bars do you have? High production birds are prone to having some bare spots from getting into/out of nesting boxes. Observe your girls for signs of picking on each other, especially during roosting time.

It won't hurt to treat them for external parasites. I agree with @KikisGirls that you should use a Permethrin based poultry spray or dust for treatment. Remember to clean out bedding and nesting boxes, treat those as well. Follow the directions on your labels, but generally you will re-treat birds and housing again in 7-10days.

I have some branches from maple trees that I cut down that I use for them to roost on. Here’s as good of one as I can get lol

 

[Wyorp Rock]

That is a bit of an odd pattern of feather loss. Do you ever see her preening or taking a dust bath? Is this the only hen with feather loss or do you have others?

I would treat her for external parasites, but also take time to observe behavior looking for signs of feather picking or excessive preening.