I feel like I'm fighting some sort of phantom boogie man here. I can't see them, but I know they are here. Don't know when it will be obvious that they are gone though. I guess I'll keep watching for the head scratching.
I'll definitely send our rain to TX! My friend has mushrooms growing on her welcome mat here in Brooklyn, NY.
I am here in Utah. LOTS of rain & crazy temps this spring. Today as I inspect & dust my hens (10), the wind is blowing, sun shining & raining ice crystals. Welcome to Utah??? Isn't that what they say?
Anyway, I am experiencing the same as you ( except no sores or anything at the feather base). Hens losing feathers (mostly neck area/back tail feather area, but two underbelly), drop in egg production, poor egg shell quality, no visible signs of parasites. Yesterday found 2 broken eggs & 1 today. I'm a new chicken care taker (since 2022) & I get so frustrated with so many problems that come up. I'm an over the top worrier & OCD with coop/run cleaning but...(right or wrong?) I have no idea. Just do the best I can with my basic lamen understanding & more info to process with each problem all the time. Backyard chicken raising is FAR from simple.
In trying to diagnose, I've gone from boredom to bullying to stress to parasites; too confined/not enough free range to...too many treats/nutrition imbalance? and so on trying to figure out whats wrong. I've done nothing different from year #1 and five hens to year #2 with ten hens (except trying to provide extra entertainment to keep them busy... NEVER had one problem with the five. The more the merrier, right?

I am now believing it's a parasite thing..... missing feathers and messy bottoms. I have bathed two hens and I guess when the weather breaks I will have to bathe the rest.


Meanwhile, treating with Garden poultry with Permethrin & DE and hoping for the best. So sad.
My DIL commented the other day (they have 7 chickens), that "no one told her chickens were cannibalistic" when she bought those cute little baby chicks. My sentiments exactly. My bad for lack of more research
So here we are in what sounds like the same boat. I feel your pain & wish you & anyone else who finds themselves in the same predicament the VERY BEST of luck. This is a wonderful & helpful forum. Don't know what I'd do without it. My husband tells me our chickens will be the death of me...

