my grandfather has a garden and everything is in pots. whenever he plants a tree out of the pots our four chickens dig it up. he could work for 12 hours and they could destroy it in 1-2 hours, and sometimes we wonder if its worth the eggs and the chickens. the main reason their out there is for the shade and the bugs. we buy them crickets and things so the food is no problem. I need suggestions on how to manipulate the shade so they will want to stay on the fenced side of the yard.