I asked my kids this to see what how they would answer it. 10 birdies are sitting on a power line. If you go grab the . 22 out of the safe and shoot one bird how many are left on the wire?
I saw a grade school test where the question was "If there are 5 ghosts and you take away one ghost, how many ghosts are left?" The kid answered zero, because ghosts aren't real.
I and a friend of mine have been doing the logic thing for over 30 years that is one of the best ways to guide children to learn and practice common sense.
None. They all fly away.
This is an old joke.
Not if you shoot the transformer