I just hatched a bunch of chicken eggs and one of my little babies has something wrong with one foot. His foot looks like a skeleton it's black on his toes and is shriveled up what is it? He doesn't seem to be in pain but I dont know. He got it when he was 2 days old and it's been a week. I've tried putting baby oil on his feet thinking he had some lice but it didn't help. What should I do?