I'm a little embarrassed to admit this, but I've noticed a few of my chicks have what looks like small callouses or burns on their back and top of head. A few also seem to have bald spots on their backs from where they must be pressing up against the plate. I'm not sure if that's what has happened, but it seems the best explanation.
Is that because I didn't raise it enough? I was so paranoid that they'd be cold..... Is anyone else noticing that?
I've not seen that with mine. I set mine where they can press against it standing, but if they sit/lay down they don't touch.