There is something deeply unnatural about that video to me. They wandered off while there was still food on your hands??Eating Out of my Hand
For example.......
Mine (including the littles) go at my hand until there is not a scrap left and then test out my rings and/or finger nails as well just in case they might also be edible.
I clearly raise pigs not Princesses and you clearly raise well-mannered chickens who know to walk away from the table and not eat the pattern off the plate.
Sigh.