Calling all Pellet Gun Owners!

Would somebody please come down here to my office building and take out these stupid crows on top of my metal roof PLEASE!!!  The sweet gum balls are falling on my roof and it sounds like those mini-buzzards are playing soccer up there.  Jumping up and down, cawing, and trying to stab the sweet gum balls and digging them out of the gutters. It's not pecking - it's hammering!  Sounds like a jackhammer!  They've made my office roof their new playground for the last 2 weeks! I'm surprised I don't have a leak in the roof yet!