Tab + Enter = win.
It's impressive that you were able to design this in 15 minutes, but there's really very little point to the game. A few things that would have improved it are:
- Levels (reach X points, proceed to next level)
- Different turkeys that take more than one shot to kill
- The need to reload your gun
- Ability to turn sound off
...and such. Also, you may wish to consider changing the game so that you don't need to click on the turkeys to shoot them. Two reasons; one, you can use tab and enter to kill all turkeys with utter ease, and two, it doesn't make much sense when your gun is aimed directly at the turkey but the shot misses because the mouse isn't on them. :P
An OK effort though, especially for 15 minutes. Just needs refinement.