I have a lot of black cherry trees (Prunus serotina) on my property and some of the mature ones have bark that is peeling off in large strips about 12 feet up the tree. The peeling off is not near the ground at all. Why could this be happening? Is the tree dying off or diseased? Maybe this is a natural process? I've searched all over the internet about this but can't find any answers. I'm hoping I can get some answers here. Thank you so much for your help!