I had 8 chickens about 8 months old in a coop that I converted from a horse stall of a mare motel. They were happy beautiful and thriving until about 2 months ago their feathers started getting frizzy. They have lost their tails and a couple of them have chunks of feathers missing. It is my understanding that it is too early to molt. I have switched them to "Feather Fixer" food. I have used diatomaceous earth. (and then heard a lot of people don't like that treatment). I then added 2 of my "teens" into the mix and sure enough their feathers are getting bad. I don't see anything but their feathers are now so mottled that it's hard to get to the skin.
I have posted on other boards and asked at local feed store and I feel hopeless. I'm hoping someone has some ideas.
Here is a picture of my easter egger, all her feathers are shaggy now.
Thanks in advance,