Hello, first time poster here. We have been trying to figure what is going on with our birds and now we are getting desperate, for we fear their feathers won't grow back in time for winter. Our first flock is almost a year old now and consists of 4 hens (2 ISA browns, and 2 Barred Rocks) and 2 Silver Lace Wyndotte Rosters. Most of the flock now is missing feathers, it started gradually a couple months ago and now the they look pretty ragged, they haven't gotten any worse but they haven't gotten any better either, and I don't seem them re-growing any of their featers. The 2 ISA Brown Hens are missing feathers on the top of their wings and are completely bald now on their mid to upper back. The 2 Barred Rock hens have a bald spot in the middle of their back. And one of the Silver Lace Wyndotte roosters is missing feathers similar to the ISA browns but even more so on his wings, also his skin (where the bald spots are) is bright red and clearly inflamed. But the other rooster, as well as the 2 Pekin ducks that they share their coup & run with, look fine with no missing feathers. Other then the feathers all the birds are behaving, eating, drinking, laying and pooping 100% normal, Every one of the hens lays everyday (sometimes one of the Barred Rocks doesn't). We use Pine shavings as the bedding and clean it fairly regularly, we've checked for mites and haven't found any (so far anyway), and we've tried spraying the affected areas with Peck-off and Vetericyn Plus, but nothing seems to be helping. I thought it might had been because our ratio is so far off, but I'm thrown off as to why one of the roosters looks this way too. We do now have a second flock now that is almost old enough to integrate into the original flock and they look fine (they live in the garage) but we are unsure of putting them out there with there with the rest of them for fear the same thing will happen to them. Thanks in advance for any advice on what to do, it will be much appreciated!