Can you tell me about this fungus growing on this maple tree? It has been present for several years and is getting worse. Branches at the top of the crown are dying back and the trunk, about 5' from the ground, has several wood pecker holes in it and the bark for an 8" w x 30" h area around those holes has separated from the sapwood - can tell by knocking on the bark. Any thoughts or advice? Would like to keep the tree and save it. Would it be helpful to cut away the separated bark? Thank you.