Gorgeous shot. There is so much technique in this sort of flight. Just like cyclists who interchange positions to share the wind pressures against them.
This is one of the wonders of nature for me. To think we live a giant's stone throw from a lake, which is well stocked with geese, it's surprising that we rarely see them flying over in v formation. I've certainly never captured it on camera. Well done Vicky!
I've read how they lean on one another and when the one in front is tired another takes their place.