The first time I went out to bow hunt, I was wearing a head lamp with a couple red LED's. I got about halfway to my stand, in the pitch black, when I hear this really loud noise that sounded like someone blowing their nose. I look up, and I see 2 red eyes glowing, bobbing around looking at me in the dark. Scared the absolute jebus out of me, to the point where I, um, quickly exited the woods and went back to bed. I now use the halogen setting on my headlamp, and make a little bit more noise than I did that first time, so I don't sneak up on anything again.