Hi, my 2 goats have unfortunately been eating bark from some mature sycamore trees in their paddock. They have removed the top layer of bark all the way around the tree in some cases. Unfortunately I didn't realise until after the event that it is so harmful to the tree, and the extent of the damage. Is there anything I can do to remedy the problem, as I wouldn't want to lose the trees. I have fenced the goats away from the trees now.