First I'll give you some history, we are in central Florida on the west coast, I started with 4 rhode island reds and 2 bardrocks and had no problems, my brother gave me a rooster still didn't have any real problems, lost 1 bardrock to a predator so I built a more secure coop, had one rhode island red that was smaller and kept getting a dirty bottom, my husband cleaned her bottom in the process plucked out her bottom feathers which was a year ago and still haven't grown back. She has lost weight but still acts normal I had one other rhode island red that was small to begin with that was picked on that started staying in the coop by herself, she got very thin so I put her in our original smaller coop and she's been in there for about two months, she has grown her feathers back and put weight on but is scared to come out of the small coop. When the other birds go near the small coop where she's at they seem to want to fight I now have three or four other chickens that have lost a lot of weight too, thought they might have worms so I dewormed them naturally using DE and apple cider vinegar with the mother. They had mites so we dusted them with DE and kept checking them, took about three weeks and no more mites. I took pictures and videos of everything. I don't really know that much about chickens, my father is from the Netherlands and grew up on a farm, he says that I just worry too much and they never really did anything to or for their chickens and they were just fine. I'm going to post up as much info as I have so you have a good picture of what I'm dealing with to see if I'm doing something wrong. This is what I feed them plus fresh vegetables and they free range everyday through the yard Original small coop that we use as a sick house This is the first chicken that lost weight and was found sitting by herself in the bottom of the coop, she was really thin and had no feathers on her back, this is her still in the small coop after two months This is the main coop which the floor is made of pet sand, which is raked out regularly Back side of the coop where the roost is Poop drawers which are cleaned regularly Nesting boxes Nesting boxes opened Inside coop of roost, plastic panels for winter Feed under roost area Chicken run area with perches Different view of roost Rhode island red, very thin and ruffled feathers, eats drinks and poops normal and lays eggs Bardrock ruffled and getting thin Bottom feathers haven't grown back, been a year Mr. Rooster Any advice would be very helpful, thank you.