gobbling is the loud short "garble garble garble 'you hear from a half mile away that the Tom's make. The drumming is the sound a Tom makes when he is in strut that sounds like if you or I would make the "V" sound for a few seconds. Very cool sound. Usually only hear it whena Tom is really close to you, althought on a quiet day I've heard people tell me they have heard it up to 50 yards away. All I know is if you hear the drumming and don't see a Tom, you know there is a Tom strutting nearbyso be careful!