Mine cleared 7ft deer fencing and now live at a campground a mile awayWhen I talk about free range, I mean it's in the 0.25 acre with electric fence. The fox that got all my neighbors' chickens was never able to get in there. I didn't think that bantam ducks can fly that high though! My chickens never tried to get over a 2ft fence to eat their favorite strawberries. I guess I should get some heavy ducks or clip their wings regularly.