The 4 month old died after not eating and drinking for a few days. I was feeding it with a dropper for the past two days - mashed up banana, honey and yogurt diluted in H2O. This morning, I was holding it and giving it the dropper when I saw a tiny red mite on my hand. I feel stupid for not thinking that she may be infested with a bug. I checked my other chickens in the coop and some had the mites. I treated all of them today. I have ten 3 week old chicks in a brooder inside, I thought I should treat them just in case. They live a few feet from where I kept the sick chicken for a few days. I do have Adams and will spray them lightly I think tomw. I am so sad, she was a beautiful buff silkie. I feel like I failed her and she could have lived if I had thought of mites 2 days ago. : (