Knocks in the woods - meaning ?

[caljay]

Hi:

here are a couple of links to recordings of knocks in the woods.

Do they have meanings - based on the pattern of knocks?

http://www.youtube.com/watch?v=upoV_K7OgGY

http://www.youtube.com/watch?v=LOXCuFKGxGc

or are they gun shots or ?

TIA

CalJay