It doesen't take long for wild animales to get used to humans especialy when food is involved. I bow hunt a guys 5 acres just to keep the deer thined out and off his wifes flowers and at the begining of the season you can actualy call them in when you call in his goats!! kinda takes the sport out of it , like shooting sombodies dog but after a few get shot they get the drift.
He has actualy been charged buy bucks and does just for going out a yelling at them to get out of the flowers.
Wild animals getting that used to humans is a recipe for disaster down the road.
you and your Brother be carefull