Hello there --- a month or two ago I posted a topic to get some advice because almost all of my hens in my 18 bird 1 rooster flock look awful. Well, I followed all of the great advice I got and to no avail. So Im wondering if anyone has any more ideas. Heres the story.... I first received my chickens last summer - about June. They were somewhere around 10 weeks old. We had 27 and no idea which ones were roosters or hens. Well time passed and we figured it out. We had 7 Roosters -- all black new jersey giants. The coop started to get a little unsettled with all the roosters, they became very aggressive and my hens were looking ragged. That is when the whole feather missing problem started. So we got rid of 6 of the roosters and kept one. That was sometime during the winter... maybe like January. I live in the Northeast so the chickens didnt get out of the coop much this winter (it was a cold one!) In the meantime, the problem has just gotten worse. Some of my hens are almost completely bare. Their bare skin is red and it looks painful. Luckily for them the coop is heated! I read somewhere that when chickens start pecking at eachother its like a vicious cycle and they just keep going and going. I had a hard time it was due to pestilence because I never see the chickens scratching themselves or looking irritated. I only see them going after eachother. Also, there are never any feathers on the ground so they must be eating them. Here are all the ideas that I got from you guys previously and tried so far: 1. Hanging cabbage in the coops --- to deter pecking on eachother 2. Supplementing the feed with cat food for added protein 3. I tried washing the coop down and sprinkling food grade DE to deter any pests. I also sprinkled it on my babies while they were roosting at dusk. 4. I also covered them with pine tar--- I dont know if I should have followed that advice, that stuff clearly wasnt for chickens and it stunk for days. 5. I let them completely out of the run so they could free range and relieve some of the tension -- which actually worked they seemed much more at ease. But unfortunately I have a dog whose taste for chickens I cant break (Ive lost 2 ) I honestly dont believe its a nutritional deficiency because they have food at all times, the Dumor layer feed with Oyster shell and chicken grit added. They have plenty of fresh water available at all times. I feed them a box of lettuce from a friend who owns a resturant daily. The get scratch every day. And all of the scraps from my house. My vet suggested it might be lice but was very vague with my questions. She suggested I get this poultry and livestock powder. But if I never see the chickens scratching or irritated --- could it still be lice? I see them attacking eachother all the time. I just have a hard time bringing in chemicals if that is not the problem. Does anyone have experience with lice and chickens? Wouldnt I be able to see it crawling around? Also--- over the winter one of the chickens was so bad I let it live in the garage alone and she grew back all of her feathers and had a much more pleasant demeanor. Is the feather loss a normal problem? Do you guys think I just need to get rid of my rooster? He is the most agressive. Should I just suck it up and sprinkle them with that lice powder as a precaution? Is this just a result of them being caged in (the run is about 30 feet long).