answer:Unless he’s violating building codes, there’s nothing that the law can do about what he builds on his property, or doesn’t build. Likewise with trees. Is the tree exactly on your property line? You don’t need a tree to hang a bird feeder. If you worked together 30 years ago, and you liked him well enough to move in next door to him 15 years ago, what exactly started the pissing contest between the two of you?