Excellent, what a great outcome

I think making mum and goslings some sort of pen and keeping them together for a while would be a good plan.
When we had goslings, all three adults seemed to help look after them (I had a trio then) - so is it possible to make somewhere safe out where the other two can help with the care?
These three grown-up goslings lived very happily with their parents, all sharing the same house, despite one being a gander until it became the spring. Then I could see that the young gander was beginning to interfere a bit with the pairing up behaviour of the parents and thought that I'd better provide the parents with some peace from their teenagers if they were going to breed again, hence selling them to you