Girls Losing A lot of Feathers- HELP

[BabyGirls]

Hi everyone. I am hoping you can help me as I understand it is normal to have them pluck out feathers at different times but now I'm up to 3 of my girls losing their feathers and one is really bad. She is actually sickly looking and wondering what I should do. She has a lot of feathers missing in the front and the others have them missing on their butt's.
Suggestions/ideas on what is happening PLEASE! See pictures of my worst baby girl.

 

[Rooster01]

Looks like she molting. I've had chickens lose almost all their feathers. They will grow back in a few weeks.

 

[BabyGirls]

She has been like this (and getting worse) for 4-5 months now!

 

[bayouchica]

Hi, you may want to give your chickens some dry catfood.That will help the feathers to grow back.
What kind of feed do they get & what % of protein?
Do they have enough space ? Could be picking going on.Could be bored ?
Check all of your birds for mites/lice. If you find any bugs on them you'll need to replace bedding & totally clean your coop out.Where they dust bathe. you can add some food grade DE (you can do a search on the forum about it) or use very little 5% sevin dust.
I don't know other advice to give ya. I do hope they get better soon.
Miriam

 

[BabyGirls]

They have a pretty big coop/pen area (9 girls and 1 female turkey). I think there is a little picking on her (but not on the others). I have dusted a couple of times but she is not growing anything back. I will have to check her as well. The food they get is alternated from Layer and scratch. I really feel bad for her as she has almost sores on he shoulders from no protection feathers and now starting on her butt too.

 

[justusnak]

I would have to say some sort of lice or mite. You said you have treated them? Have you checked thier bums really well for lice/mites? I dont know,,,just guessing.