I figure this is the place to ask this question.
A couple of years ago I was watching a flock of ducks in a little pond, the pond was surrounded by a short fence and I asked my wife why the ducks didn't just fly away.
She looked at me like I was crazy and said "Ducks can't fly". As a lifelong waterfowl hunter I could have made a case for flying ducks. Rather than start an extended argument which I knew I would not win I shut up.
Can anyone tell me why the local ducks don't just fly away?