We live in the city for now, so I don't have a choice. Either I clip those flight feathers or my neighbors get visitors. And their dogs get visitors. We did have a female visit a back yard New Years Day 2020... Luckily we were able to hop the 6' wooden fence and get her back in our yard without issues and it was a very nice and understanding neighbor. And our very large male managed to fly over the front fence once as well. I still do not know how he got his big butt off the ground to do it, but he did. He then proceeded to sit in the driveway and wave at everyone passing by. So, yeah, clipping is essential.
And even when I move out into the country by next year, we will still clip. We love our babies and there are way too many creatures, 18 wheelers, and hazards around for them to meet and greet. We will have a 6ft no climb fence with an angled top to keep most terran predators out, (they sleep in a pen/barn). I can try to control as much as possible to what gets into my immediate yard, but I cannot control what is outside my border. We love our feather babies way too much.