So i think my chickens have mites. I have a hen that has no feathers on her head anymore and my frizzle is loosing feathers on her side I don't think its from my Rooster. I have straw for bedding because I live on a farm and its free. Iv heard people say that's not good bedding. I'm gonna look them over after its done storming to see if i can see anything. What is a good way to treat them If they have them?