Do you believe in supernatural beings?

in philippino mythology such as tikbalang a (horse headead man) kapre (giant man or an ogre) aswang (philippine vampire that forms into any kind of animals). . Last evening when my cousin wandered around outside our house maybe it was 8:00, he told us that he saw an aswang flying above his head like a vulture we dont believe so we stepped outside to check if it is true but there is nothing.