when our border collie was younger(about 4-6 months old) she liked to "play" with the goslings we had in a little uncovered run in our yard. As the fence was only a foot tall she could easily get in. As we finally got sick of her killing our goslings we decied to let the adults adopt them( as adut geese tend to love being parents) It did not take her long to realize that the goslings are not toys. Today almost two years later, she still refuses to get close to the geese and doesn't bother the goslings whether they are with their parents or in our run.
Yeah you would need a fence though. Our geese are allowed to roam around the yard during the day, but if not watched they like to play in the puddles on the road, walk along the road to the neighbors house, or go out back behind our home in our fields.