Do you remember the game where u get to shoot chickens in the air for a minute or two?
It is actually called Moorhuhn which means "Moorland Chicken" in German.
I found the game on a German website.
Hope this will bring back some good memories.
They even have later versions of the game but I only managed to got this one
Download here
Controls
Shoot -- Left Click
Reload -- Right Click (You can only reload when the bullets are used up)
Move -- Left/Right Arrow Key
Start the game -- Space Bar