I noticed that there were some mites on my chickens a few days ago. Today, while I was putting some lice and mite powder through my chickens' feathers, I noticed that my rooster had a yucky 'thing' (don't know what to call it) under the flap of his comb. I applied some antiseptic and anti inflammatory cream on it, and put him to bed. Is it an infected mite bite, or something else? Thank you.