Schauberger
nature. People who are mentally limited or who have no natural creative ability as a rule are said to be bird-brained. This is a bird, however, that can grow into a veritable bird of prey, which here is to be interpreted as mindless greed, idiocy or other similar traits. [The Energy Evolution - Harnessing Free Energy from Nature, The Liquefaction of Coal by Means of Cold Flows]