My chickens free range over three acres during the day. Unfortunately, they found the neighbor's apple and pear trees and thus love to go over and feast off the ground. My neighbor says he doesn't mind but I would rather not take advantage of his kindness. A week ago I set a fake owl in their regular path to the neighbor's and it stopped them dead in their tracks on their way. They checked it out the second day and decided to turn back too. It has been a week and they no longer go in that direction. If I move the owl every once and again, can I expect it to take care of the situation or will they catch on eventually and I should look into another solution?