Leg sores - need to diagnose and cure

Hi y'all! My Ameraucana, Eleanor, needs your help. I notice some sores on one of her legs the other day, and wishful thinking, I waited to see if it'd resolve itself... but it hasn't. I took a closer look and saw that one of the sores appears to puss a little; the other sore is hard and black. After looking up possible causes like mites, I gave her a warm foot bath, tried to open the wound (not much luck there), and then I put some olive oil on her legs/feet as I heard that would suffocate mites.

What does this look like to the experts?

FYI, she doesn't seem to limp, though she wasn't thrilled with me poking at the spots. She's 30 weeks old and not laying yet and her roommates may have some other illnesses that aren't helping anyone out. I need all the help I can get, so thanks in advance!