A few days ago I posted a picture of my chicks eyes. Their eyes are doing a little better and no chicks have shown any more signs of getting worse except the one who’s eye I noticed first. He had 2 bumps on his back I was cleaning them and the top of it came off. I noticed white stuff so I figured I should get some of it out so I did. What is this? I took pictures before and after. He did have poop dried on his back for a few days before I noticed it so I’m not sure if that could cause it? Whatever it is I still have a couple chicks in my flock not showing symptoms. Also included a picture of the one with the bumps poop because he had explosive diarrhea when I was cleaning the bumps.