Voices

I hear voices. Not in my head...at least I don't think. As I sit in my office I can often hear voices in the distance. I just can't figure out where they are coming from. My office has floor to ceiling windows that look out onto a balcony....being the great detective that I am, I can tell that there isn't anyone on the balcony talking. The voices are too faint to be the offices on either side of me. They are too mumbled for me to tell what they are saying or who they are. Are there people living in the wildlife habitat? Is there an 1800's village in the small wooded area between my office and the main road? Now I'm creeped out.