Years ago, I had a bad bout of scaley mites. Some one had brought over banties that had it, and even their toes were missing from it, and another one ending losing a toe. I was treating with VetRX. Two of my girls ending up getting it too. I treated them also, but their scales have never been the same, and they keep growing weird. I continue to put mineral oil on them when it gets bad, and it softens and I am able to pull it off. I also put VetRX other times. Has any one ever experienced this? Is it like scar tissue from years ago, or is is just normal for older chickens's legs to get like this? This is a 6 year old hen. But my 6 year old RIR's do not have this, that have been here with this one the whole time. I have another hen whose legs get like this, and one of her legs seems to really hurt her. She keeps it up a lot, and this year she is mostly just setting. You can see it in her eyes she is in pain, and she just sort of squeeks out bawks now. It is so sad. The other chickens often go sit with her to keep her company. She does come out and play around the yard still, too.