Pond Boss Forums Thread Like Summary - Nested Mallards

I had a sneaky suspicion that I had a mallard hen nesting on my island in my tiny pond this year. I saw hen show up on the pond without seeing her fly in, then next thing in knew she was gone but I didn't see her fly away. My suspicions were confirmed this morning when my wife sent me a video of her and a bunch of ducklings rooting around on the edge. On to the question, I don't mind them now, but has anyone had experience with hatched wild mallards? Will these migrate on after some time, or will they stick around longer term?

The mallards that have hatched on my pond grow up and then if they get big enough to fly they just disappear one day. I thought I would see them learning to fly but I haven't seen them do that