I would watch them very closely.So my older babies are going to be trouble? We had to remove the dominant gander when they were babies because he was determined to kill them. Sounds like I've made myself some more trouble. I did notice the adults have been chasing them off since they started a new nest.
If the older ones are "teenagers" they might be trouble.
Some of mine would run across the yard to attack the babies.
Even though the goose was with the babies. It must be a survival instinct.. or just jealousy..