Yesterday I got Peanut, my Buff Rock hen, out of the pen to play with her. When I set her down on a low tree branch, I noticed her legs. I saw two teeny-tiny dark gray things crawling in and out of her scales. I hadn't noticed this until then and none of my other chickens have the same problem (which is a big relief). Are these scaly leg mites? Her legs look normal for now, but that could change fast if these are scaly leg mites. So, does anyone know exactly what these are and how to get rid of them/prevent them in the future? If it involves taking Peanut to the vet, well, my sister offered to take to the vet if I found out the problem and if it's serious. I just added four Barred Rocks hens to the flock yesterday and I don't want Peanut passing whatever she has onto them.