Yours, you must admit, is a bizarre view. Rights are natural if they exits in absence of any legislation, that has nothing to do with naturalness of the underlying conduct. Besides, even animals have string territorial instincts, so real property rights apply to a naturally occurring behavior. That is probably too long a tangent.
As I noted in #95, all that is needed to implement property rights is a convention on posting land, or its paper equivalent -- a registry of deeds.
Territorial "rights" are not the same thing as ownership. Yes, animals defend territory but territory is temporary in nature. I don't find my views all that bizarre. They are shared by every native American tribe and virtually all tribal peoples around the world and are not in conflict with libertarian views in my opinion. The libertarian view is founded on one principle: The recognition that the initiation of aggression is wrong.
As I noted in #95, all that is needed to implement property rights is a convention on posting land, or its paper equivalent -- a registry of deeds.
And there is absolutely nothing "natural" about that. Any right which requires a beaurocracy to manage, private or otherwise, is not natural.