Gosling Scourge

This pond adjoins a golf course where the Canada geese are not welcome as they make such a huge mess. This goose must be a dominant goose as it has corralled so many goslings. My understanding is that dominant geese will raid other pairs and steal their goslings. The extra shows a huge Mallard along with a Canada goose pair which appears not to have any goslings. I wonder if theirs are among the group in the water.