You have a really pretty flock. Fortunately scaly leg mite is pretty benign if caught early, so treat those who have symptoms and keep an eye on the other chickens' legs.Oh, also, I guess the birds decided I wasn't stressed enough just yet! I figured out yesterday that by batch of bantams have scaly leg mites! yay! they are in a separate area than the large birds, but the large birds do go up to their pen... anyone think I should treat all of them instead of just the banties? Please say no...
You might already know there is a vaccine for Mareks that is administered within a few days of hatching. I thought I would mention it just in case, because breeding for would be hard for me to do personally. Here is a link with a lot of info on Mareks: https://www.backyardchickens.com/a/the-great-big-giant-mareks-disease-faq