My 4 week old light brahma cockeral has something strange on his leg that I just found today. Is this scaleyleg mite? Or a scrape? None of the pullets seem to have anything like this. Please take a look at this and let me know how I should treat. It doesn't rub off easily like it would if it were poop and appears to be somewhat "stuck" to, or part of, his leg. I'm getting new chicks tomorrow and I JUST got over cocci in these and it seems like I can't catch a break with them. Please advise!