Dont scare me like that Hunter!

well the story starts on a hill with my "haystack" and Hunter.  I am a naturally skittish person, so startling me isn't hard.  We were sitting and waiting for my long night exposures when we hear something moving about in the bushes a little bit off.  This of course puts me on edge and I continue to shoot when from behind me Hunter lets out a "Oh my god!".  I spin around as my heart jumps out of my chest to find Hunter fine, no woodland creature attacking him, and nothing wrong.  He said something flew out of the tree at him, and everything was ok, but that scare put me off of taking pictures in the field for the night.