BC, I can tell you that porcupines will eat the bark on most types of trees from Aspen to Maple, Pine and more. They frequently do much damage and from time to time do enough damage to kill the tree. As you might guess, I am a lover of trees and not porcupines.
In years gone by they were protected by the state of Minnesota using the logic that someone lost in the woods could possibly kill one for food to survive. They are physically and mentally quite slow.[/QUOTE]
Maybe I can get a porcupine to buy my flock.....